# GSIKE 51.2V 100Ah LiFePO4 Wall Battery: 5.12kWh Whole-Home Backup | GSIKE US

# GSIKE 51.2V 100Ah LiFePO4 Wall Battery — 5120Wh, 48V Class, for Whole-Home Backup, Solar Self-Consumption & Off-Grid Shops in the US

**The GSIKE 51.2V 100Ah LiFePO4 wall battery (model GSK-51.2V-100AH, FixWall 5.0) is a 16S1P, 48V-class home storage panel that holds 5120Wh (5.12 kWh), runs at 2560W rated through a smart BMS and peaks at 5120W, rated for 6000 cycles at 80% depth of discharge over a 10-year design life — a slim 44 kg wall unit built for the American home owner who wants solar self-consumption and grid-outage backup without the installed price of a name-brand powerwall.**

5120 Wh 51.2V / 48V class 16S1P 2560W rated 5120W maximum 6000 cycles @80% DoD RS485 / CAN round LCD IP54 up to 81.92 kWh bank

![GSIKE 51.2V 100Ah wall-mounted LiFePO4 home battery, slim matte-white panel about 64 cm high, round dark unlit LCD on the upper front, blank white face, front view](https://cdn.shopify.com/s/files/1/0729/3042/7041/files/51.2v-100ah.webp?v=1782888365)

**What this is (and what it is not).** The GSK-51.2V-100AH is a 48V-class DC energy-storage battery — not a charger, not a solar charge controller and not an inverter. There is no built-in AC outlet, no MPPT input and no AC output rating. Sixteen 3.2V cells are wired **16S1P** (16 in series, 1 parallel string) for **51.2V nominal**, the "48V class" bus US hybrid inverters use. Two numbers matter: it stores **5120Wh** (51.2V × 100Ah = 5.12 kWh) and its **2560W rated** continuous ceiling (51.2V × 50A), with a **5120W maximum** short-time figure (51.2V × 100A). To run 120V/240V US household loads you add a **separate 48V hybrid inverter**; to recharge it you use that inverter's charge stage or a separate 48V LiFePO4 controller set to **58.4V**.

**Compatibility note — read before you order.** This pack talks over **RS232, RS485 at 9600 baud and CAN at 500 kbps**, built around a Pylontech-family 48V protocol. Connecting it to a US hybrid inverter is not automatic: the inverter must list a matching Pylontech-compatible 48V battery in its supported-battery menu, and the comms wires must land on the correct pins. We do not claim it works with every inverter on the market. Confirm your inverter's supported-battery list with the inverter dealer before you wire the bank.

## Manual specifications

Parameter

Value

Chemistry / assembly

LiFePO4 (LFP), **16S1P** — 16 × 3.2V cells in series, 1 parallel string

Nominal voltage / class

**51.2 V** nominal (the "48V class" bus US hybrid inverters use)

Rated capacity / energy

**100 Ah / 5120 Wh** (51.2V × 100Ah = 5.12 kWh)

Rated continuous power

**50 A** charge/discharge = **2560 W** rated

Maximum power (short-time)

**100 A** = **5120 W maximum** (not the rated figure; for brief peaks only)

Working voltage window

**43.2 V – 58.4 V**

Charge voltage

**58.4 V** bulk/absorption (standard 16S LFP curve)

BMS

**Smart BMS** — over-charge, over-discharge, over-current, short-circuit, high/low temperature and surge-voltage protection

Communications

**RS232, RS485 @9600 bps, CAN @500 kbps**; pair with a 48V inverter that lists a Pylontech-compatible 48V battery

Cycle life / design life

**6000 cycles at 80% DoD** @25°C; **10-year design life**

Expansion

**Up to 16 units in parallel only (no series)**; 16 × 5.12 kWh = **81.92 kWh** (51.2V × 1600Ah)

Mounting / display

Wall-mount steel bracket with expansion bolts; **round LCD** front display, power switch

Housing / ingress

**IP54**; CE, RoHS, UN38.3 certified

Weight / size

Net **44 kg** (~97 lb); **640 H × 428 W × 160 D mm**

## Why a 48V wall battery beats 12V / 24V packs for an American home

Most DIY lithium buyers start on 12V, and that is right for an RV or a trolling motor. The moment the load becomes a _house_ — a fridge on a 120V circuit, a well pump, lights across several rooms, a couple of plugs — a 12V or 24V bank hits a wall. At 48V the same wattage draws half the current of a 24V system and a quarter of a 12V system, so the DC cables between battery and inverter stay thin, run cool and lose very little voltage over distance. A single slim 44 kg wall panel stores 5120Wh and feeds a 48V hybrid inverter that ties straight into a US 120/240V split-size panel. That is the whole reason US whole-home backup and solar self-consumption systems standardized on the 48V bus: real energy, real continuous power, sensible cable sizes, and a wall-mounted footprint that does not take over the garage.

This GSIKE panel is the storage node in that system, and it is deliberately honest about the boundary. It stores and releases DC energy; it does not convert it to AC. The hybrid inverter on the wall next to it does the conversion, the grid-tie switching and (usually) the solar charge control. Buyers who understand that split — battery here, inverter there, comms cable between them — get a clean install. Buyers who expect an all-in-one box will be disappointed, which is exactly why the note at the top of this page spells out "no built-in outlet, no MPPT, no AC output" before they read any further.

![GSIKE 51.2V 100Ah wall battery detail, slim white panel](https://cdn.shopify.com/s/files/1/0729/3042/7041/files/51.2v-100ah_3.webp?v=1783676693)

![Round LCD and terminal cover view](https://cdn.shopify.com/s/files/1/0729/3042/7041/files/51.2v-100ah_4.webp?v=1783676686)

![Mounted profile and side view](https://cdn.shopify.com/s/files/1/0729/3042/7041/files/51.2v-100ah_5.webp?v=1783676696)

## Illustrated use cases built around the 2560W rated ceiling

![A slim tall matte-light-grey wall-mounted 48V LiFePO4 home energy storage battery, about 64 cm high and 43 cm wide and only 16 cm deep, mounted flush on a clean American garage wall, a small round dark unlit LCD circle on its front with no digits, a smooth blank white front face with no text, a plain lower terminal cover with cables, tidy residential garage, sealed grey electrical cabinet to the side, clean concrete floor, soft daylight](https://aka.doubaocdn.com/s/83SMJQh5r7)

### Whole-home backup node

Essential 120V circuits — fridge, lights, router, well-pump control — fed through a 48V hybrid inverter when the grid drops.

![A slim tall matte-light-grey wall-mounted 48V LiFePO4 home solar storage battery, about 64 cm high and 43 cm wide and slim 16 cm deep, mounted flush on a white wall in a tidy American home solar utility room, a small round dark unlit LCD circle on its front, a smooth blank white front face, a plain lower terminal cover with neat cables, small dark rooftop solar panels glimpsed through a window, plain unmarked grey switch cabinet, matte white walls, even soft light](https://aka.doubaocdn.com/s/HbXVekjsVU)

### Solar self-consumption

Store rooftop PV made at midday to use after sunset, instead of exporting at a low buyback rate.

![A slim tall matte-light-grey wall-mounted 48V LiFePO4 home battery, about 64 cm high and 43 cm wide and slim 16 cm deep, mounted flush on a rustic wooden plank wall inside a small off-grid American cabin or workshop, a small round dark unlit LCD circle on its front, a smooth blank white front face, a plain lower terminal cover, warm pendant lamp glow, dark pine forest through a small window, warm dusk light](https://aka.doubaocdn.com/s/Pppiah0qkA)

### Off-grid cabin / shop

Remote mountain cabin or workshop power, paired with a 48V inverter and a modest PV array.

![A slim tall matte-white wall-mounted 48V LiFePO4 home storage battery, about 64 cm high and 43 cm wide and slim 16 cm deep, mounted flush on a clean painted wall in a tidy American home utility and mechanical room, a small round dark unlit LCD circle on its front, a smooth blank white front face with no text, a plain lower terminal cover, a plain unmarked water heater and ductwork softly blurred behind, clean modern interior, even soft light](https://aka.doubaocdn.com/s/T37V27L5b8)

### Garage / utility room mount

The slim 160 mm depth and steel bracket tuck it onto a clean utility wall beside the panel.

![On the left a slim tall matte-light-grey wall-mounted 48V LiFePO4 home battery, about 64 cm high and 43 cm wide and slim 16 cm deep, mounted flush on a white wall, with a small round dark unlit LCD circle and a smooth blank white front face, connected by a thick black cable to a separate sealed plain light-grey metal hybrid inverter box on the right with a solid blank closed front face, clean American utility room, soft even light](https://aka.doubaocdn.com/s/QqwgHzpR6O)

### Beside a hybrid inverter

Wired to a separate sealed 48V hybrid inverter box; the comms cable carries protocol between them.

![A slim tall matte-white wall-mounted 48V LiFePO4 home battery, about 64 cm high and 43 cm wide and slim 16 cm deep, mounted flush on a wall in a dim American living room at night during an outage, a small round dark unlit LCD circle on its front, a smooth blank white front face, soft glow of a floor lamp and a warm window in the softly blurred background, cozy nighttime home, warm low light](https://aka.doubaocdn.com/s/PgSfybYvsT)

### Night outage comfort

Warm lights and the fridge keep running through an evening blackout on the stored 5120Wh.

![A slim tall matte-white wall-mounted 48V LiFePO4 home battery, about 64 cm high and 43 cm wide and slim 16 cm deep, mounted flush on a featureless white wall in a bright modern American house powerwall room, a small round dark unlit LCD circle on its front, a smooth blank white front face, a plain lower terminal cover, minimal interior, light wood floor, a tall plant, large window, soft daylight](https://aka.doubaocdn.com/s/4UEsvt3Rcu)

### Modern house powerwall room

A clean, appliance-style wall panel that belongs in a finished utility or furnace room.

![Two identical slim tall matte-light-grey wall-mounted 48V LiFePO4 home batteries, each about 64 cm high and 43 cm wide and slim 16 cm deep, mounted side by side flush on a clean white wall, each with a small round dark unlit LCD circle and a smooth blank white front face, a thick black interconnection cable running between the two units, clean American kitchen-utility backdrop, soft even light](https://aka.doubaocdn.com/s/VL6m9OrSIy)

### Two-pack parallel bank

Two units in parallel make 10.24 kWh; scale out to 16 packs for 81.92 kWh whole-home storage.

## Runtime table — what 5120Wh will actually run

Continuous load

Example US load

Theoretical runtime (5120Wh)

Through a 92%-efficient inverter, ~80% DoD

100 W

LED lights + Wi-Fi router

~51.2 h

~41 h

300 W

Energy-star fridge (avg cycle)

~17.1 h

~13.7 h

600 W

Fridge + lights + a few plugs

~8.5 h

~6.8 h

1000 W

Essential circuits (TV, laptop, fans)

~5.1 h

~4.1 h

1500 W

Circuits incl. a small microwave burst

~3.4 h

~2.7 h

2560 W

Rated continuous ceiling (50A)

~2.0 h

do not plan at the limit

5120 W

Maximum (100A, brief peaks only)

~1.0 h

not a continuous duty point

These are planning estimates, not lab guarantees. Actual runtime depends on inverter efficiency, cable loss, temperature, battery age and how the smart BMS cycles the pack. Plan continuous loads at or under the 2560W rated figure, keep a 10–20% state-of-charge buffer, and remember the 80% DoD cycle-life rating means roughly 4.1 kWh of comfortable regular draw.

## Objective pros and cons

### Pros

-   **Real 48V home energy:** 5120Wh on a slim wall panel, the exact bus US whole-home systems use.
-   **Honest power ratings:** 2560W rated / 5120W maximum, clearly separated so you do not over-size loads.
-   **Long cycle life:** 6000 cycles at 80% DoD, 10-year design life.
-   **Scales cleanly:** parallel to 16 packs = 81.92 kWh on one 48V bus; start small and grow.
-   **Communications built in:** RS232, RS485 @9600 and CAN @500 kbps for hybrid-inverter dialogue.
-   **Wall-friendly build:** 44 kg, 160 mm deep, IP54, round LCD state-of-charge readout.
-   **Price:** EUR 849.99 with a real EUR 1250.00 strike — far below installed premium powerwalls.

### Cons

-   **It is a battery, not an inverter** — no AC outlet, no MPPT, no AC output; you supply the 48V hybrid inverter.
-   **Compatibility must be verified:** the inverter must list a Pylontech-compatible 48V pack; we do not claim universal fit.
-   **Parallel only, no series** — you cannot stack voltage; capacity grows by adding parallel packs.
-   **No phone app of its own**; monitoring comes through the inverter's exposed BMS bridge.
-   **Listed in EUR** on the storefront; confirm USD conversion and live US logistics at checkout.
-   **IP54 is not outdoor-rated** for direct rain; plan a dry garage, utility room or basement install.

## US shipping, returns and offer

Ships **free within the United States** (shipping rate $0), with **1–3 days of handling** plus **3–7 days of transit**, and a **30-day return window** by post. It is sold new and in stock.

## FAQ — buying the GSIKE 48V 100Ah wall battery for the US

Will a single 51.2V 100Ah (5.12 kWh) battery actually back up my whole house during an outage?

A single pack holds 5120Wh, which backs up essential loads on a 120/240V split-phase panel fed through a separate 48V hybrid inverter - a fridge, lights, the Wi-Fi router, a well-pump control circuit and a few phone and laptop chargers - for a day or two. It is not a whole-home unlimited solution. A central air conditioner, an electric oven or an induction cooktop running nonstop will drain it fast. Size the bank to your essential load list: most US whole-home setups run two to four parallel packs (10 to 20 kWh) before they consider one pack sufficient. Remember the 2560W rated ceiling - what the inverter converts cannot exceed what this battery can continuously deliver.

Do I need a special inverter, or will my existing 48V hybrid inverter just work?

You need a 48V-class hybrid inverter, and - this is the step US buyers miss - the battery and inverter must speak the same protocol. This pack exposes RS232, RS485 at 9600 baud and CAN at 500 kbps, and it is designed around a Pylontech-family 48V protocol. That does not mean it works with every 48V inverter on the market: check the inverter manufacturer's supported-battery list for a matching Pylontech-compatible 48V model, set that battery type in the inverter menu, and land the comms wires on the correct pins. We do not claim compatibility any inverter maker has not documented.

The spec says 2560W rated but 5120W maximum - which number do I size my loads to?

Size to the 2560W rated figure. That is the continuous 50A charge/discharge this smart BMS is built to sustain. The 5120W number is the 100A maximum, a short-time ceiling the pack can deliver briefly (startup inrush on a fridge compressor, a motor) but should not be planned as a continuous draw. If you run a 3000W load all evening, you will trip against the rated limit long before you worry about the maximum. Plan continuous loads at or under 2560W and treat 5120W as a brief peak, not a duty cycle.

Can I wire two of these in series to make 96V, or do they have to be parallel?

They are parallel-only. This model supports up to 16 identical units in parallel at 51.2V, which takes you to 1600Ah and 81.92 kWh on the same 48V bus. There is no series option - do not wire two packs in series to raise the voltage, because the BMS, the 58.4V charge voltage and the round LCD are all built around a single 51.2V string. To add capacity, add more parallel packs, matched within about a month of production and similar charge history.

Is this battery really a whole system, or do I still need an inverter and charge controller?

It is a battery only. There is no built-in AC outlet, no MPPT solar charge controller and no AC output - it has no kVA rating because it is a DC storage node. To run 120V/240V US household loads you add a separate 48V hybrid inverter (which also handles grid-tie backup). To recharge from rooftop solar you either rely on the hybrid inverter's own MPPT inputs or add a separate 48V LiFePO4 charge controller set to a 58.4V charge voltage. Think of it as energy on a wall; the inverter is what turns it into household power.

How heavy is it, and can I hang it on a normal US stud wall by myself?

It weighs 44 kg (about 97 lb) and measures 640 mm high x 428 mm wide x 160 mm deep - a slim wall panel, not a brick. It ships with a steel wall bracket and expansion bolts, and the narrow 160 mm depth keeps it clear of walkways. At 97 lb this is genuinely a two-person lift onto the bracket; anchor the bracket to wall studs or a masonry wall rated for the load, not to drywall alone. The IP54 rating means it is fine in a dry garage, utility room or basement, but it is not rated for fully exposed rain or a damp crawl space.

Will it pair with rooftop solar to cut my electric bill, or just for outages?

Both, if your inverter supports self-consensus mode. The stored 5120Wh is daytime solar energy you use after sunset instead of exporting at a low buyback rate - that is the self-consumption case. The same 5120Wh is also your backup pool when the grid fails, switched over by the hybrid inverter. The round LCD shows state of charge at a glance; for phone-level monitoring you add a compatible BMS bridge that the inverter exposes. Size the usable daily solar harvest to about one pack per 5 kWh of evening load you want to self-consume.

I live off-grid in a cabin / workshop - is one 5.12 kWh pack enough?

It is the right building block, but rarely the whole answer for an off-grid home. One pack runs lights, a DC fridge, a small water pump and electronics overnight. The moment you add a mini-split, a power tool compressor or a microwave, you move to two or four parallel packs. Because the bank parallelizes to 81.92 kWh, you can start with one and add identical GSIKE packs later as the load grows. Keep it above freezing while charging - LiFePO4 should not be charged below 0C - and size your PV array and 48V charge controller to refill the bank each day.

What is the cycle life and warranty, and why 80% DoD rather than 100%?

The cells are rated for 6000 cycles at 80% depth of discharge, with a 10-year design life. The 80% figure is the conservative, repeatable depth the cycle number is measured at: pulling 100% every cycle would shorten life, while resting at 80% DoD gets you the rated 6000. In practice that means you can plan on using about 4.1 kWh of the 5.12 kWh regularly and leave a healthy buffer, and still expect roughly a decade of service. Compare cycle claims from competitors at the same DoD, because a headline number alone is not comparable.

How much does the GSIKE wall battery cost, and what are the US delivery terms?

The panel is listed at EUR 849.99 struck from a EUR 1250.00 regular price, in stock and new condition, with no separate SKU/GTIN/MPN on the storefront (engineering model GSK-51.2V-100AH). Dispatch within the United States carries no shipping charge, with 1 to 3 days of order handling plus 3 to 7 days of transit, and a 30-day post return window. The storefront prices this item in EUR; confirm at checkout whether the US page renders a converted USD figure, and treat live US logistics and stock as confirmed in the cart at order time.

## Keep reading on the GSIKE 48V battery set

[Best 48V 100Ah Wall Battery in the US (2026)](https://gesike.com/blogs/news/best-48v-100ah-wall-battery-for-whole-home-backup-in-the-us-2026-gsike-vs-eg4-fortress-signature-litime-renogy)

How GSIKE stacks up against EG4 LiFePower, Fortress, Signature, LiTime and Renogy.

[GSIKE FixWall 5.0 vs EG4 / Fortress / Signature](https://gesike.com/blogs/news/gsike-fixwall-5-0-vs-eg4-lifepower-fortress-signature-litime-renogy-48v-100ah-head-to-head)

Head-to-head specs, price and the Final Verdict on which 48V wall pack to buy.

[Size a 48V Home Battery for Whole-Home Backup](https://gesike.com/blogs/news/gsike-48v-battery-sizing-for-us-whole-home-backup-how-many-5-12-kwh-packs-do-you-need)

How many 5.12 kWh packs you need, and what each one will run.

[Install a 48V Wall Battery on a US Hybrid Inverter](https://gesike.com/blogs/news/gsike-fixwall-5-0-install-wire-a-48v-battery-to-a-us-hybrid-inverter-via-rs485-can-and-pylontech)

RS485 / CAN / Pylontech protocol matching, brackets and parallel wiring.

 

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## Details

- **Price:** 849.99 EUR
- **Vendor:** GSIKE
- **Type:** GSIKEUS
- **Tags:** GSIKEUS

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 849.99 EUR | In stock |

## Images

- GSIKE FixWall 51.2V 100Ah LiFePO4 Battery 5.12kWh
- GSIKE 51.2V 100Ah LiFePO4 Wall Battery: 5.12kWh Whole-Home Backup | GSIKE US
- GSIKE 51.2V 100Ah LiFePO4 Wall Battery: 5.12kWh Whole-Home Backup | GSIKE US
- GSIKE 51.2V 100Ah LiFePO4 Wall Battery: 5.12kWh Whole-Home Backup | GSIKE US
- GSIKE 51.2V 100Ah LiFePO4 Wall Battery: 5.12kWh Whole-Home Backup | GSIKE US
- GSIKE 51.2V 100Ah LiFePO4 Wall Battery: 5.12kWh Whole-Home Backup | GSIKE US
- GSIKE 51.2V 100Ah LiFePO4 Wall Battery: 5.12kWh Whole-Home Backup | GSIKE US

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> Source: [Gsike](https://gesike.com/products/gsike-51-2v-100ah-lifepo4-wall-battery-5-12kwh-whole-home-backup-gsike-us)
> Updated: 2026-10-16