GSIKE 51.2.V 100AH LiFePO4 Battery with BMS
Estimate delivery times: 2-7 Business days (European Union, United States).
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GSIKE 51.2.V 100AH LiFePO4 Battery with BMS
Description
GSIKE 51.2V 100Ah Wall LiFePO4 Battery 5120Wh, Parallel to 16, CAN/RS485 | 849.99 EUR
Final Verdict: GSIKE 51.2V 100Ah = 16S1P, 5120Wh = 5.12kWh, 50A=2560W rated (100A=5120W short-time), working 43.2–58.4V, RS232/dual RS485/CAN, parallel only up to 16 = 81.92kWh, 6000 cycles @80% DoD, IP54. At 849.99 EUR instead of 1250.00 EUR, free delivery to 15 EU countries, 30-day returns and 3-year warranty.
51.2V16S1P100Ah5120Wh5.12kWh50A=2560W100A=5120W43.2–58.4VCAN/RS48581.92kWh maxIP54849.99 EUR

Full technical specification (16S1P, wall pack)
Manual and rating-plate figures; 16S1P = sixteen 3.2V cells in series, 1 parallel string, 51.2V nominal (the 48V class home-storage bus). At the nameplate: 300W lasts about 17 hours, 500W about 10 hours, 1000W about 5 hours, and the 2560W rated line lasts 2 hours. In practice a typical essential load of fridge, lighting, router and boiler controls sits around 0.5–1.5kW, so one pack comfortably covers an overnight outage; derate about 10% for the inverter, and parallel more packs for longer autonomy. Cables and fuses are often underestimated but are a decisive part of a safe installation. At the battery's low voltage the current is high, so conductors must be short, thick and sized by current and length, keeping voltage drop and heating within normal limits. On every safety boundary (battery, panel, output) use a properly rated fuse and isolator switches; an undersized cable can overheat, and the fuse protects against short circuit and fire. European availability and logistics affect delivery speed and return conditions. Confirm warehouse location, estimated lead time, return rules and spare-parts/support availability before buying. Prices in EUR may be shown without hidden fees, but the final price, duties and local taxes are always confirmed by the checkout. Warranty terms and the possibility of support matter more than a single monthly discount badge.
| Parameter | Value |
|---|---|
| Chemistry / assembly | LiFePO4 (LFP) 3.2V/100Ah cells, 16S1P — 16 in series, 1 parallel string |
| Nominal voltage / class | 51.2 V nominal (the "48V class" home-storage bus) |
| Rated capacity / energy | 100 Ah / 5120 Wh = 5.12 kWh (51.2V × 100Ah) |
| Rated continuous power | 50 A charge/discharge = 2560 W rated (plan ordinary loads to ~2.56kW) |
| Maximum short-time power | 100 A charge/discharge = 5120 W maximum (short-time ceiling only; not rated/sustained) |
| Working voltage | 43.2 V – 58.4 V (discharge cut-off ~43.2V) |
| Charge voltage | 58.4 V bulk/absorption (standard 16S LFP CC/CV) |
| BMS | Built-in smart BMS (OEM): over-charge, over-discharge, over-current, short-circuit, high/low temperature and surge-voltage protection |
| Communications | RS232 / RS485 (9600 bps, dual RS485) / CAN-BUS (500 kbps) to pair with a mainstream 48V hybrid inverter |
| Cycle life / design life | 6000 cycles at 80% DoD @25°C ; ~10-year design life |
| Parallel expansion | Parallel only, up to 16 units = 81.92 kWh (51.2V × 1600Ah); no series stacking |
| Mounting / display | Wall mount with steel bracket + expansion bolts; round LCD front display; power switch; power terminals (copper-alloy ring lugs) |
| Housing / ingress | ABS / metal case, IP54 ; CE, RoHS, UN38.3 |
| Environment | Operating −10°C to 50°C ; storage 0–35°C; humidity <95% RH; altitude <2000 m |
| Weight / size (headline) | Net 44 kg (44 ±2 kg) ; 640 H × 428 W × 160 D mm ; wall bracket ~409.5 × 322 mm |
| Warranty | 3-year warranty; ~10-year design life |
| Price / stock | €849.99 EUR sale, struck from €1,250.00 (32.0% off); In stock, new, valid from 2026-07-09 |
| Delivery / returns | Free shipping to 15 European countries (1–3 days handling + 2–7 days transit) · 30-day returns |
51.2V, 100Ah, 5120Wh = 5.12kWh, 50A=2560W rated / 100A=5120W max, 6000 cycles @80% DoD, IP54, parallel to 16, 849.99 EUR instead of 1250.00 EUR.
GSIKE 51.2V 100Ah wall pack vs lead-acid
Same home-storage role; compare usable DoD energy, cycle count, communication and footprint, not just nameplate kWh. The box contains the wall bracket, expansion bolts, a power cable, a communication cable and the manual. At €849.99 (struck from €1,250) this is cheaper than LiTime 48V 100Ah (€1,199.99) and ECO-WORTHY Cubix100 (€1,009.99) and near Redodo (€855), but it is modestly dearer than the established Pylontech US5000 4.8kWh (~€718) — GSIKE counters with a little more usable energy (5.12 vs 4.8kWh), a dedicated wall mount, the round LCD and 30-day returns, while Pylontech has the longer inverter-compatibility track record. Connecting the inverter to the grid and generator has a precise procedure and switch order. Always isolate the input branches first, then connect battery, panel and AC circuit, and finally set the charge profile and parameters. Off-grid and backup mode require a clean output waveform and fast transfer time; sensitive electronics, computers and network gear need a stable wave without oscillation. Have all work checked by a qualified electrician if you do not hold the relevant competence. Safety rules for an isolated installation: never work live, protect every branch against short circuit and sparks, protect the battery against overcharge and deep discharge, and do not exceed the continuous output limit. A pure sine wave protects sensitive electronics but does not replace correct cable and fuse sizing. If you are unsure of the wiring or battery profile, use a qualified installer; a wrong install endangers equipment and safety.
| Metric | GSIKE 51.2V 100Ah wall pack | Typical flooded lead-acid bank |
|---|---|---|
| Usable energy | 5120Wh, ~80% DoD, 6000 cycles | ~2500Wh usable at low DoD, ~500 cycles |
| Rated continuous | 50A = 2560W (100A = 5120W short-time) | Lower sustained current, heavy |
| Form factor | Wall-mounted, 640×428×160mm, 44kg | Floor battery rack, heavier |
| Communication | RS232 / dual RS485 / CAN-BUS | None or basic voltage only |
| Expansion | Parallel only, up to 16 = 81.92kWh | Parallel with ageing and imbalance |
GSIKE keeps 5120Wh, 6000 cycles, CAN/RS485 and a slim wall form at 849.99 EUR instead of 1250.00 EUR, free delivery to 15 EU countries.
Runtime from the 5120Wh pack at typical loads
Approximate runtime at 80% DoD, nameplate 5120Wh; plan ordinary loads to the 50A / 2560W rated figure. When designing an off-grid or hybrid system, start from real daily consumption: list every permanent and starting appliance, its rated power and run time, then build a daily energy budget in Wh. Only after that choose the inverter, PV array and battery; buying the equipment first and sizing the load later leads to undersizing or needlessly high cost. Homes, caravans, holiday cabins and workshops have different load profiles, so a generic recommendation for a fridge, pump or heat pump is always individual. Wi-Fi and monitoring let you track voltage, power, charge current and battery state directly on a phone or computer. The app shows daily gain, consumption and history, so you can spot overload or a failing cell before a fault. Daytime battery-free running with clear sun is practical, but overnight and continuous backup need the battery bank; monitoring helps distinguish array-only running from battery running.
| Load | Example use | Runtime (5120 Wh nameplate) |
|---|---|---|
| 300 W | LEDs + router + fridge compressor average | 17.1 h |
| 500 W | Essential overnight loads | 10.2 h |
| 800 W | Fridge + lights + small electronics | 6.4 h |
| 1000 W | Average home essential load | 5.12 h |
| 1500 W | Essentials plus occasional kettle/microwave cycles | 3.41 h |
| 2000 W | Heavier essential load | 2.56 h |
| 2560 W | Rated continuous ceiling (50A) | 2.0 h |
| 3000 W | Short-time only (near the 100A max) | 1.7 h |
| 5120 W | Absolute short-time ceiling (100A max) | 1.0 h |
Above 2560W sustained, the bank operates only in the short-time 100A / 5120W window; size essentials to 2560W.
Expansion: parallel, battery-free operation, PV/AC/MPPT/DC/WiFi/protections
Parallel only at 51.2V; there is no series stacking. Match cells and balance before linking. The MPPT charge controller is the heart of solar charging: it tracks the maximum-power point of the panels and adjusts voltage so the battery receives as much energy as possible. Compare not only the total controller current but also the panel-voltage range and the module wattage it accepts; an undersized MPPT does no damage but limits array harvest. Wire panels in series or parallel so the working voltage falls inside the controller range, respecting insulation and fuses on the PV side. Maintenance extends equipment life: check terminal torque, ventilation cleanliness and cooling regularly in a dry, airy room free of damp and dust. Watch charge voltage and any cell heating, and after a few years confirm battery condition and connection tightness. Avoid high humidity, dust or frost risk; respect the operating and storage temperatures stated in the manual.
| Area | Detail | |||
|---|---|---|---|---|
| 1 | 51.2 V | 100 Ah | 5.12 kWh | single-wall starter / self-consumption |
| 2 | 51.2 V | 2 × 100 Ah | 10.24 kWh | overnight essentials |
| 4 | 51.2 V | 4 × 100 Ah | 20.48 kWh | multi-day backup |
| 8 | 51.2 V | 8 × 100 Ah | 40.96 kWh | whole-home partial backup |
| 16 | 51.2 V | 16 × 100 Ah | 81.92 kWh | max parallel bank |
Scales from one 5.12kWh wall pack to a max 81.92kWh parallel bank; 849.99 EUR, free EU delivery, 30-day returns.
Charge profile, communication and operating conditions
Parameters follow the manual; the spec sheet prevails on conflict. The battery provides the reserve for cloudy days and night operation. Its capacity is chosen from daily consumption and the desired autonomy days, respecting the depth of discharge of the chemistry. Lead-acid tolerates shallower depth and more frequent top-ups; LiFePO4 accepts deeper cycles. Regardless of chemistry, care for equal cell voltage, the correct charge profile and current sizing, because a mismatched profile shortens life more than the cycles themselves. When comparing models, match the same class: continuous kW, starting peak, MPPT current and range, acceptable PV wattage, battery input voltage, number of outputs and Wi-Fi connection. The listing name may not match true continuous power, so read the manual table and rating plate. A cheaper model with a smaller MPPT or no monitoring can behave worse under real load, so total value depends on the sum of parameters, not the ad slogan.
| Parameter | Value |
|---|---|
| Charge voltage (bulk/absorption) | 58.4 V (standard 16S LFP CC/CV); discharge cut-off ~43.2V |
| Working voltage window | 43.2 V – 58.4 V |
| Recommended pairing | a mainstream 48V hybrid inverter with a 51.2V LFP battery profile; the inverter is a separate device (this battery has no AC output) |
| Communications | RS232 / RS485 (9600 bps, dual RS485) / CAN-BUS (500 kbps) — match the inverter's protocol/profile |
| Operating temperature | −10°C to 50°C ; do not charge below 0°C without a heater (no self-heating built in) |
| Storage temperature | 0°C to 35°C ; humidity <95% RH (no condensation); altitude <2000 m |
| Ingress protection | IP54 (dust-protected, splash-proof) — indoor / sheltered installation |
| Display / switches | round LCD (per-pack voltage / capacity), power switch |
| In the box | wall bracket, expansion bolts, power cable, communication cable, manual |
IP54 dust and splash; indoor / sheltered garage, utility room or apartment wall installation.
Honest advantages and limitations
Advantages
- 5.12kWh in a slim wall box — 640×428×160mm on a steel bracket keeps a whole wall's worth of energy off the floor; ~116 Wh/kg density.
- Honest 48V home-storage spec — 16S1P, 58.4V charge, 43.2–58.4V window, and RS232/RS485/CAN to talk to a mainstream 48V hybrid inverter (not a DIY wire-only pack).
- €849.99 struck from €1,250.00 — the cheapest verified dedicated wall pack with a real review set: LiTime 48V 100Ah €1,199.99, ECO-WORTHY Cubix100 €1,009.99, Redodo ~€855.59 — with 30-day returns and free EU shipping.
- Parallel up to 16 = 81.92kWh , so one 5.12kWh wall pack grows into a multi-pack bank on the same 51.2V bus (no series).
- 6000 cycles at 80% DoD with a ~10-year design life; round LCD for at-a-glance state of charge.
- Real buyer rating 4.85 / 5 from 13 reviews , praising the capacity for camper, cabin and home-backup use.
Limitations
- A 44kg wall unit needs a strong wall, the steel bracket and expansion bolts, and a two-person install — not a hang-it-yourself job.
- It is a battery, not an inverter — you must pair it with a compatible 48V hybrid inverter; there is no AC output on its own.
- Parallel-only, cannot series (already 48V) — you cannot stack it higher to a 102V-class bus.
- Rated continuous is 2.56kW (50A) , so one pack will under-feed a 5kW inverter for sustained draws; 5.12kW is short-time only.
- The charger/inverter must do 58.4V bulk with a 51.2V LFP profile — a generic 48V charger without that absorption setting will not finish.
- Indoor / IP54, not fully outdoor , and there is no self-heating (do not charge below 0°C). It also has a round LCD rather than the WiFi/Bluetooth app monitoring some rivals add.
Eight real use cases of the GSIKE 51.2V wall pack
Use-case images in fixed order; each shows an honest European application.

Garage wall
Mounted flush on a garage wall next to the main consumer unit, the slim 16cm-deep box keeps its 5.12kWh off the floor. The GSIKE 51.2V 100Ah LiFePO4 Battery with BMS (FixWall 5.0 / FlxWall 5.0, engineering model GSK-51.2V-100AH) is a slim wall-mounted 48V-class home storage pack: sixteen 3.2V cells in series (16S1P) give 51.2V and 100Ah = 5120Wh = 5.12kWh, a smart BMS delivers 2560W rated at 50A continuous and 5120W maximum at 100A short-time, with RS232/RS485/CAN to pair with a separate 48V hybrid inverter, 6000 cycles at 80% DoD in a 44kg IP54 case — sold across Europe at €849.99, struck from a real €1,250 regular price, with free delivery and a 30-day return.

Utility / boiler room
Hung in the utility room near the boiler and switchgear, it backs the heating controls and essentials through an outage. 5120 Wh / 5.12kWh 51.2V / 48V class 16S1P 2560W rated (50A) 5120W max (100A) 6000 cycles @80% DoD RS232 / RS485 / CAN 58.4V charge IP54 wall mount round LCD up to 81.92 kWh bank

Beside a separate inverter
The battery and the paired 48V hybrid inverter sit side by side — remember the inverter is a separate device over RS485/CAN. Same GSIKE 48V home-storage family, two form factors. This page sells the slim 100AH wall-mount (5.12kWh) . The larger 300AH appears below as context only — never confuse its figures with this pack.

Whole-home night backup
At night it carries lights, router and fridge; one pack covers overnight essentials, parallel packs extend it. Plan ordinary continuous loads to the 2560W rated line (50A) ; the 3000W and 5120W rows are short-time only. When running through the paired 48V hybrid inverter, derate roughly 10% for AC efficiency.

Solar self-consumption
It stores daytime solar for evening use, cutting grid import in a self-consumption setup. Because this is already a 48V-class pack you expand in parallel , never in series. Each added 5.12kWh unit stacks capacity at the same 51.2V bus; the BMS parallel limit is 16 units = 81.92kWh (51.2V × 1600Ah).

Modern apartment
The clean blank panel suits a visible powerwall location in a bright apartment without a garage. Verbatim buyer reviews as submitted. This listing has no buyer photographs, so none are shown — the words are left to speak for themselves. The distribution is 11 five-star and 2 four-star reviews (Lukas Schneider and Thomas Müller), averaging 4.846, rounded to 4.85.

Nordic off-grid cabin
On a cabin wall it stores solar for lights and devices after dark; the LCD shows state of charge at a glance. I'm using this with a solar system at my cabin. The battery has been holding up well and gives me enough stored energy to get through the evening and overnight.

Two units in parallel
Two packs side by side = 10.24kWh on the same 51.2V bus; the parallel path scales up to 16 units. I purchased this as part of my home backup system. It works well with my inverter and gives me some peace of mind when the power goes out.
Official product photo
Official manufacturer images; the manual table prevails on conflict.




Shipping, return and service (EU, 15 countries)
| Item | Detail |
|---|---|
| Price | 849.99 EUR promotion, struck from 1250.00 EUR · in stock, new |
| Free delivery to | GB, DE, FR, IT, ES, NL, BE, AT, SE, DK, FI, IE, PT, PL, CZ (15 EU countries) |
| Handling / transit | 1–3 days handling + 2–7 days transit, shipping rate 0 EUR |
| Returns | 30-day return window from delivery, original condition and packaging |
| Warranty & support | 3-year warranty; manufacturer technical support |
Prices in EUR; final logistics, duties and taxes are confirmed at checkout.
Häufig gestellte Fragen
How big a home battery do I actually need — is one 5.12kWh pack enough?
It depends on the goal. For overnight essentials (fridge, LED lighting, router, boiler controls running roughly 0.5–1.5kW), one 5.12kWh pack gives about an evening of backup. If you want to run higher average loads, cover cloudy days, or back a whole house including cooking, add more packs in parallel: two units make 10.24kWh, four make 20.48kWh, and the ladder scales to 81.92kWh across sixteen units. I bought this mainly for camping, but I've ended up using it around the house too. It's nice to have a backup power source when I need to charge several devices.
Can this one wall battery run my whole house or a 5kW inverter?
Not continuously on its own. This pack is rated for 2560W continuous (50A); the 5120W figure (100A) is a short-time ceiling, not a sustained rating. A single 5.12kWh unit will under-feed a 5kW inverter for steady draws, though it can handle short surges. Plan ordinary household loads to about 2.56kW per pack and parallel more units if your inverter runs higher for long periods. The 4.8kWh capacity makes a noticeable difference compared with the smaller power stations I've used before. It's especially useful when we're away from shore power for a couple of days.
How do I connect it to my hybrid inverter — which cable and protocol?
Use the built-in RS232 / RS485 / CAN links (RS485 9600 bps with a dual port, CAN at 500 kbps) to a mainstream 48V hybrid inverter. Before commissioning, set the inverter battery profile to 51.2V LiFePO4 with a 58.4V charge voltage and a 43.2V cut-off. This is a battery, not an inverter — it has no AC output of its own — and it does not include WiFi app monitoring, only a round LCD. It depends on the goal. For overnight essentials (fridge, LED lighting, router, boiler controls running roughly 0.5–1.5kW), one 5.12kWh pack gives about an evening of backup. If you want to run higher average loads, cover cloudy days, or back a whole house including cooking, add more packs in parallel: two units make 10.24kWh, four make 20.48kWh, and the ladder scales to 81.92kWh across sixteen units.
What charger voltage does it need — will my current charger work?
It needs a 16S LiFePO4 charge profile with a 58.4V bulk/absorption stage and a 43.2V lower cut-off. A generic 48V charger without that exact absorption setting will not fully charge the pack, and a 12V or 24V charger is completely unsuitable. Confirm the charger or hybrid inverter can deliver 58.4V before you buy. Not continuously on its own. This pack is rated for 2560W continuous (50A); the 5120W figure (100A) is a short-time ceiling, not a sustained rating. A single 5.12kWh unit will under-feed a 5kW inverter for steady draws, though it can handle short surges. Plan ordinary household loads to about 2.56kW per pack and parallel more units if your inverter runs higher for long periods.
Can I stack several of these in series to get a higher voltage?
No. This is already a 48V-class (51.2V) pack, so you expand in parallel only — never in series. Parallel stacking keeps the bus at 51.2V and adds capacity: one unit is 5.12kWh, two is 10.24kWh, four is 20.48kWh, eight is 40.96kWh and sixteen reaches 81.92kWh. You cannot series-stack it toward a 102V-class system. Use the built-in RS232 / RS485 / CAN links (RS485 9600 bps with a dual port, CAN at 500 kbps) to a mainstream 48V hybrid inverter. Before commissioning, set the inverter battery profile to 51.2V LiFePO4 with a 58.4V charge voltage and a 43.2V cut-off. This is a battery, not an inverter — it has no AC output of its own — and it does not include WiFi app monitoring, only a round LCD.
How many units can I parallel before I hit the limit?
The on-page table and pack images support up to 16 units in parallel, giving 51.2V × 1600Ah = 81.92kWh. (A line in the body copy mentions a lower figure; we follow the table/images and recommend you confirm the exact parallel limit with the merchant.) Use identical units and matched state of charge, and use the dual RS485 port to daisy-chain packs. It needs a 16S LiFePO4 charge profile with a 58.4V bulk/absorption stage and a 43.2V lower cut-off. A generic 48V charger without that exact absorption setting will not fully charge the pack, and a 12V or 24V charger is completely unsuitable. Confirm the charger or hybrid inverter can deliver 58.4V before you buy.
Is it safe to wall-mount a 44kg battery myself?
We recommend a strong wall, the included steel bracket (~409.5×322mm) and expansion bolts into a solid substrate, plus a two-person lift given the 44kg weight. Plan clearances around the unit and the terminal cover, and follow the install guide for anchoring, grounding and cabling rather than hanging it on plasterboard alone. No. This is already a 48V-class (51.2V) pack, so you expand in parallel only — never in series. Parallel stacking keeps the bus at 51.2V and adds capacity: one unit is 5.12kWh, two is 10.24kWh, four is 20.48kWh, eight is 40.96kWh and sixteen reaches 81.92kWh. You cannot series-stack it toward a 102V-class system.
Can I leave it in an unheated garage through winter?
It operates down to −10°C and stores best between 0°C and 35°C, with an IP54 indoor/sheltered rating. It has no self-heating element, so do not charge it below 0°C — if your winter room can drop that low, add heating or choose a self-heating rival. The on-page table and pack images support up to 16 units in parallel, giving 51.2V × 1600Ah = 81.92kWh. (A line in the body copy mentions a lower figure; we follow the table/images and recommend you confirm the exact parallel limit with the merchant.) Use identical units and matched state of charge, and use the dual RS485 port to daisy-chain packs.
How long will 5.12kWh actually last on essential loads?
At the nameplate: 300W lasts about 17 hours, 500W about 10 hours, 1000W about 5 hours, and the 2560W rated line lasts 2 hours. In practice a typical essential load of fridge, lighting, router and boiler controls sits around 0.5–1.5kW, so one pack comfortably covers an overnight outage; derate about 10% for the inverter, and parallel more packs for longer autonomy. We recommend a strong wall, the included steel bracket (~409.5×322mm) and expansion bolts into a solid substrate, plus a two-person lift given the 44kg weight. Plan clearances around the unit and the terminal cover, and follow the install guide for anchoring, grounding and cabling rather than hanging it on plasterboard alone.
What is in the box, and how does the price compare to Pylontech or LiTime?
The box contains the wall bracket, expansion bolts, a power cable, a communication cable and the manual. At €849.99 (struck from €1,250) this is cheaper than LiTime 48V 100Ah (€1,199.99) and ECO-WORTHY Cubix100 (€1,009.99) and near Redodo (€855), but it is modestly dearer than the established Pylontech US5000 4.8kWh (~€718) — GSIKE counters with a little more usable energy (5.12 vs 4.8kWh), a dedicated wall mount, the round LCD and 30-day returns, while Pylontech has the longer inverter-compatibility track record. It operates down to −10°C and stores best between 0°C and 35°C, with an IP54 indoor/sheltered rating. It has no self-heating element, so do not charge it below 0°C — if your winter room can drop that low, add heating or choose a self-heating rival.







