# GSIKE 12.8V 300AH Lithium Energy Storage Battery for Solar Power System

# GSIKE 12.8V 300Ah LiFePO4 Battery — 4019.2Wh, 100A BMS, 6000 Cycles, 4P4S to 64.3kWh, IP65, for RV, Off-Grid & Home Storage, Free EU Shipping

**The GSIKE 12.8V 300Ah LiFePO4 battery stores 4019.2Wh of deep-cycle energy in a 26kg IP65 ABS case — 314Ah engineering cells (a ~3840Wh "300Ah" nameplate), a 100A BMS capped at 1280W continuous, 6000 cycles at 80% depth of discharge, a 14.4V CC/CV charge profile and expansion to a 16-unit / 64.3kWh bank, sold across Europe at €369.99 with free delivery and a 30-day return.**

4019.2 Wh 314 Ah (300Ah class) 100A BMS 1280W ceiling 6000 cycles 400A pulse / 1s 14.4V CC/CV IP65 M8 terminals up to 64.3 kWh bank

![GSIKE 12.8V 300Ah LiFePO4 battery, large matte-black ABS case about 54 cm long with blank dark-orange front plate and two silver M8 bolt terminals on top, front view](https://cdn.shopify.com/s/files/1/0729/3042/7041/files/12.8v-300ah.webp?v=1781229409)

**What this is (and is not).** Model **GSK-12.8V-300AH** — a 12-volt DC energy-storage battery, not a charger, not a solar charge controller and not an inverter (it has no built-in mains outlet). Keep two numbers straight: the engineering cells are **314Ah / 4019.2Wh**, while the "300Ah" tier name × 12.8V = **~3840Wh**, the figure printed on marketing and runtime graphics. The conservative manual BMS is **100A continuous / 1280W**; see the flagged specification note below before sizing loads. To charge it, use a 14.4V LiFePO4 charger or solar controller; to run mains appliances, add a separate 12V inverter.

**Specification note — read before you size your loads.** (a) This 300Ah pack stores roughly **3.1× the energy of the 100Ah sibling** (4019.2Wh vs ~1.28kWh), but it shares the **same 100A BMS — so its continuous power ceiling stays at 1280W**. Parallel units add current; a single 300Ah does not raise the 1280W ceiling. (b) GSIKE's marketing graphics for this pack label a **150A BMS / 1920W** and show an **1800W** appliance running for ~2.13h. Those figures conflict with the manual (100A / 1280W). Treat the conservative 1280W ceiling as your planning number.

## Manual specifications

Parameter

Value

Chemistry / nominal voltage

LiFePO4 (LFP), **12.8 V** nominal (4 cells in series)

Rated capacity / energy

**314 Ah / 4019.2 Wh** (12.8V × 314Ah engineering cells); "300Ah" tier nameplate ≈ **3840 Wh**

Continuous current

**100 A charge / 100 A discharge** (max continuous power **1280 W**)

Pulse / peak

**400 A for 1 second only** (startup inrush; not continuous)

BMS

**100 A BMS** — over-charge, over-discharge, over-current, over-temperature and short-circuit protection (OEM-supplied module)

Cycle life

**6000 cycles at 80% DoD** (about 5000+ at full 100% DoD)

Charge settings

**CC/CV**; charge voltage **14.4 V ±0.2 V**; recommended charge current **40 A**

Discharge cut-off

**10 V** end-of-discharge

Internal resistance

≤20 mΩ

Expansion

**4P4S = 16 units = 64.3 kWh** (4S = 51.2 V, 4P = 1256 Ah)

Terminals

**M8 bolt terminals** (8 mm bolt / 12 mm nut)

Housing / ingress

ABS housing, **IP65**; CE, RoHS, UN38.3 certified

Weight / size

Net **26 kg** (gross 27 kg); **540 × 283 × 275 mm** (L×W×H)

Self-discharge

Less than 3% per month

Warranty / design life

**3-year warranty**; ~10-year design life

Price / stock

**€369.99 EUR** · In stock, new condition

Delivery / returns

Free shipping to European countries (1–3 days handling + 2–7 days transit) · 30-day returns

## Pick the right GSIKE capacity — 300Ah vs 100Ah vs 25.6V-100Ah sibling

Same GSIKE line, three SKUs. This page sells the **12.8V 300Ah**; the table below helps you compare it against the smaller 12.8V 100Ah sibling and the 25.6V 100Ah (8S) variant. Energy numbers use the engineering-cell figures; the 300Ah gives ~3.1× the run-time of the 100Ah at the same 1280W ceiling.

Parameter

GSIKE 12.8V 300Ah (this page)

GSIKE 12.8V 100Ah sibling

GSIKE 25.6V 100Ah sibling

Nominal voltage

**12.8 V**

12.8 V

25.6 V (8S string)

Rated capacity

**314 Ah** (300Ah class)

100 Ah

100 Ah

Energy

**4019.2 Wh** (~3.84 kWh nameplate)

~1.28 kWh

~2.56 kWh

Continuous power

**1280 W** (100 A)

1280 W (100 A)

~2.56 kW (100 A at 25.6 V)

Run-time at a fixed 12V load

**~3.1× the 100Ah**

baseline

~2× the 100Ah

Net weight

**26 kg**

9.8 kg

larger 8S pack

Price (EUR, 14 Oct 2026)

**€369.99**

€159.99

own-line SKU

Best for

multi-day RV, off-grid cabin, home solar storage, trolling

weekend camping, single-vehicle leisure

mid-voltage 24V-class systems

**Price-per-Wh honesty:** the 300Ah costs +€210 over the 100Ah but delivers ~3.14× the energy — €0.092/Wh vs €0.125/Wh, so the larger pack is about 26% cheaper per Wh for bigger loads. Full capacity-choice reasoning is in the linked capacity guide below.

## Lead-acid replacement — about six 12V 100Ah batteries, in parallel

Because LiFePO4 safely delivers close to its full capacity while flooded lead-acid is limited to about 42% depth of discharge, **one GSIKE 300Ah replaces roughly six 12V 100Ah lead-acid batteries wired IN PARALLEL on the same 12V bus**. Never wire them in series to make 24V — that is a different system.

Metric

One GSIKE 12.8V 300Ah LiFePO4

Six 12V 100Ah flooded lead-acid (parallel)

Nominal energy

**4019.2 Wh**

~7200 Wh nameplate (6 × 1200 Wh)

Usable energy (DoD)

**~3818–4019 Wh** (~95–100% usable)

**~3024 Wh** (~42% DoD for longevity)

Cycle life

**6000 cycles @80% DoD**

~500 cycles

Weight

**26 kg net**

~150–180 kg

Maintenance

None (no watering, no equalisation)

Watering / venting / equalisation

Replacement ratio

**1 GSIKE 300Ah ≈ six 12V 100Ah lead-acid IN PARALLEL** for the same usable Wh at 12V

**Honest density note:** 4019.2 Wh ÷ 26 kg = 154.6 Wh/kg (~70 Wh/lb) — computed from the manual. Vague marketing multiples are not repeated here.

## Expected run-time by load (3840 Wh nameplate ÷ load)

Ideal DC runtimes at the 3840Wh 300Ah nameplate, before derating. **Keep every continuous load at or below the 1280W ceiling**; if you pull the full 1280W, the bank lasts ~3.0–3.14h. When running through a separate 12V inverter, derate by about 90–95% efficiency and leave depth-of-discharge headroom.

Load

Example use

Runtime (3840 Wh nameplate)

100 W

Laptop + lights + fan

**38.4 h**

300 W

Compressor fridge

**12.8 h**

500 W

Fridge + TV + fan

**7.68 h**

800 W

Fridge + small kitchen loads

**4.8 h**

1000 W

Higher DC / inverter load

**3.84 h**

## Charge settings & operating temperatures

Item

Specification

Charge method

**CC/CV** (constant current, constant voltage)

Charge voltage

**14.4 V ±0.2 V**

Recommended charge current

**40 A**; the BMS allows up to 100 A continuous charge

Discharge cut-off

**10 V** end-of-discharge cut-off

Internal resistance

≤20 mΩ

Charge temperature

**0 °C to 50 °C**; **do not charge below 0 °C** (no self-heating)

Discharge temperature

**−20 °C to 60 °C**

Storage temperature

**−10 °C to 50 °C**; store at ~50% charge, self-discharge <3%/month

## Expansion — 4P4S up to 64.3 kWh

The battery supports parallel and series building. **4P4S** = four in parallel × four in series: **16 units total = 64.3 kWh**. 4S raises the voltage to **51.2 V**; 4P raises the capacity to **1256 Ah** (51.2 V × 1256 Ah = 64,307 Wh).

Configuration

Voltage

Capacity

Energy

Units

1P1S (single)

12.8 V

314 Ah

~4.0 kWh

1

2P1S

12.8 V

628 Ah

~8.0 kWh

2

4P1S

12.8 V

1256 Ah

~16.1 kWh

4

**4P4S (max)**

**51.2 V**

**1256 Ah**

**64.3 kWh**

**16**

**Matching rule:** when wiring units in series or parallel, use batteries that are identical in model and matched within about one month of production / charge history. Do not mix new and heavily-used units in one bank. Always follow the 10 V cut-off and the 14.4V charge profile for the whole bank.

## Pros & cons

### Pros

-   **4019.2 Wh at ~100% usable DoD** with a **100A BMS** and **6000 cycles @80% DoD** — one unit replaces about six 12V 100Ah lead-acid batteries in parallel.
-   **Cheaper per Wh than the 100Ah sibling:** €0.092/Wh vs €0.125/Wh — about 26% less per watt-hour for larger off-grid and home loads.
-   **Expandable to 64.3 kWh** (4P4S, 16 units, 51.2 V / 1256 Ah) so one starter unit can grow into a whole home-storage bank.
-   **€369.99** undercuts the branded EU 300Ah field — LiTime (€579.99), Renogy Core self-heating (€599.99), Redodo (€599.99) and Power Queen (€539.99) — with free EU shipping and 30-day returns.
-   **IP65 ABS case, M8 terminals, CE/RoHS/UN38.3**, **26 kg net** — far lighter and smaller than the ~150–180 kg lead-acid equivalent.
-   Real buyer rating **4.9 / 5 from 18 reviews**, praising multi-day camper run-time, home solar self-consumption and trolling-motor endurance.

### Cons

-   **Same 100A BMS / 1280W ceiling despite 3× capacity.** You get ~3.1× the run-time, not ~3.1× the power. Parallel units add current; a single 300Ah does not raise the 1280W continuous ceiling, and several rivals ship a 200A BMS.
-   **Needs a 14.4V lithium charger.** A legacy lead-acid charger that only floats at 13.5–13.8V without a LiFePO4 profile will not fully charge it.
-   **26 kg is heavy — plan a two-person lift** into a motorhome locker or boat compartment.
-   **Match identical units within ~1 month** of production / charge history for series or parallel; never mix new and worn cells in one bank.
-   **Not for golf carts** — this is a 12V leisure / deep-cycle pack, not a traction battery for golf-cart drive current.
-   **No cold charging below 0°C** (charge window 0–50°C; discharge works down to −20°C). Bare EU-warehouse strips (e.g. DATOUBOSS at €355.68) are slightly cheaper and ship a 200A BMS; GSIKE's edge is the storefront, 30-day return, 3-year warranty and the verified review set.

## Where this battery fits — real European use cases

![Cozy Scandinavian camper van interior, a large matte-black blank-plate LiFePO4 battery box about 54 cm long on a light wooden bench shelf with two silver M8 terminals, white linen curtains and green meadow outside](https://aka.doubaocdn.com/s/p73AeUueYt)

### Camper van

On a bench shelf it runs the fridge, water pump, heater and chargers for several days off-grid — exactly what multi-day travellers want.

![Open under-seat locker bay of a modern German motorhome, a large matte-black blank-plate LiFePO4 battery box about 54 cm long strapped in with a hold-down strap, neat black cables](https://aka.doubaocdn.com/s/vyzZusUHlG)

### Motorhome locker

Strapped into the under-seat bay, the 54 cm case fills an existing battery compartment and powers extended trips away from hook-ups.

![Interior of a small rustic Nordic log cabin in a Swedish pine forest at dusk, a large matte-black blank-plate LiFePO4 battery box on a pine shelf under a warm pendant lamp](https://aka.doubaocdn.com/s/bSIdOK82Qm)

### Forest log cabin

A remote cabin relies on it for warm light and phone power after the panels stop generating at dusk, across several cloudy days.

![Tidy home solar storage room in a European house, a large matte-black blank-plate LiFePO4 battery box on a low steel rack next to a plain grey metal cabinet, neat red and black cables](https://aka.doubaocdn.com/s/VzGo4I4VCF)

### Home solar storage

Mounted on a rack beside the switchgear, it stores daytime solar and covers the evening self-consumption load, expandable later.

![Open bow storage locker of a small blue-and-white fishing boat on a calm Dutch lake, a large matte-black blank-plate LiFePO4 battery box fitted inside, electric trolling motor softly out of focus at the stern](https://aka.doubaocdn.com/s/cMDXYLXg18)

### Fishing boat / trolling motor

The steady 100A discharge gives a trolling motor smooth thrust without sag — buyers report a full day of fishing on one charge.

![Four large matte-black blank-plate LiFePO4 battery boxes about 54 cm long standing side by side on a heavy wooden rack as a multi-unit parallel bank in a tidy garage, thick red and black cables between terminal posts](https://aka.doubaocdn.com/s/sZ6q2R4G8h)

### Parallel battery bank

Add matched units in parallel to grow the run-time (current adds) — the path toward a 16-unit / 64.3 kWh system.

![Interior of a small tidy off-grid garden shed in rural France, a large matte-black blank-plate LiFePO4 battery box on a wooden shelf, small dark solar panels through the window](https://aka.doubaocdn.com/s/2kz7qIVfnq)

### Off-grid garden shed

On a shed shelf it cycles daily from a small solar array; the IP65 case shrugs off damp workshop air.

![A large matte-black blank-plate LiFePO4 battery box about 54 cm long on a worn wooden workbench in a tidy Dutch home garage workshop, connected by thick red and black charging cables, hanging tools softly blurred](https://aka.doubaocdn.com/s/YWSH2iUP5C)

### Workshop charging

On a workbench it charges from the 14.4V source and supplies bench lighting, pumps and chargers — the 10V cut-off protects the cells.

## Shipping & returns

Policy point

Detail

Price

€369.99 EUR · In stock, new condition

Free delivery to

European countries)

Handling / transit

Handling 1–3 days + transit 2–7 days, shipping rate EUR 0

Returns

30-day return window from delivery, by post, in original condition and packaging

Return cost

Return shipping is handled by the merchant; original import duties and taxes are non-refundable

## Frequently asked questions

How much energy does this battery really hold — 300Ah or 314Ah?

The engineering cells are 314Ah / 4019.2Wh (12.8V × 314Ah). The "300Ah" tier name × 12.8V = ~3840Wh, the figure printed on marketing and runtime graphics. Both describe the same pack. Spec tables on this page use the conservative manual 314Ah / 4019.2Wh and the 3840Wh nameplate for run-time; we never conflate this 4kWh pack with the smaller 100Ah sibling.

What is the largest continuous load I can run — can I pull more than 1280W?

The conservative manual ceiling is 1280W continuous (12.8V × 100A charge and discharge), with a 400A one-second pulse for startup inrush. Plan every steady load at or below 1280W. GSIKE's marketing graphics for this pack show a higher BMS rating and a larger appliance; treat 1280W as your planning number and confirm the true BMS rating with the merchant before wiring anything above it (see the specification note). Parallel batteries add current — a single 300Ah does not raise the 1280W ceiling.

Does one 300Ah battery really replace six lead-acid batteries?

Roughly, on the same 12V bus. One GSIKE 300Ah delivers ~3818–4019 usable Wh at ~95–100% depth of discharge, whereas a 12V 100Ah flooded lead-acid gives only ~504 usable Wh at ~42% DoD. So one GSIKE replaces about six 12V 100Ah lead-acid batteries wired IN PARALLEL on the 12V bus. Never wire them in series to make 24V — that is a different system.

Why does the 300Ah still cap at 1280W even though it holds about 3× the energy of the 100Ah?

Because energy (Wh) and power (W) are two different things. This 12V GSIKE family uses the same 100A BMS whether the pack holds 100Ah or 314Ah, so at 12.8V the continuous ceiling is 100A × 12.8V = 1280W on every single unit. The extra cells only lengthen run-time (4019.2Wh vs ~1.28kWh) — they do not raise the one-pack power ceiling. To pull more watts continuously, wire matched units in parallel (current adds while the voltage stays 12.8V) or build a higher-voltage series bank; until then, never plan a steady load above 1280W on a single 300Ah.

How long will it run my fridge, lights and appliances?

At the 3840Wh nameplate divided by the load: 100W → 38.4h, 300W → 12.8h, 500W → 7.68h, 800W → 4.8h and 1000W → 3.84h. Keep every continuous load at or below the 1280W ceiling; at the full ceiling the bank lasts ~3.0–3.14h. When running through a separate 12V inverter, derate by about 90–95% efficiency and leave depth-of-discharge headroom.

How do I expand the bank — series or parallel, and how far?

The maximum configuration is 4P4S: four in parallel times four in series = 16 units, giving 51.2V and 1256Ah for 64.3kWh. When building a bank, use units that are identical in model and matched within about one month of production / charge history; do not mix new and heavily-used units, and keep the whole bank on the 14.4V charge profile with the 10V cut-off.

The box reads 300Ah but the manual lists 314Ah / 4019.2Wh — which rating should I trust?

Both, for different jobs. The inside cells are engineering-rated 314Ah (12.8V × 314Ah = 4019.2Wh); GSIKE sells this in the conservative "300Ah" tier, whose nameplate is 12.8V × 300Ah ≈ 3840Wh — the figure on the marketing and runtime graphics. Use 314Ah / 4019.2Wh for spec comparisons and the 3840Wh nameplate to estimate run-time. The ~180Wh gap is tier rounding, not a second battery, and it does not change the 100A BMS, the 1280W ceiling or the 6000-cycle rating.

How heavy is the 300Ah and how should I move or mount it?

It weighs 26kg net (27kg gross) — genuinely heavy, so plan a two-person lift and use the integrated handles when tilting it into a motorhome locker or boat compartment. Bolt it down through the base with the M8 terminals using the supplied hardware, keep it upright, leave ventilation around the ABS case and run the thick 12V cables short. Because the charge window is 0°C to 50°C, mount it where the space stays above freezing in winter; do not charge below 0°C even though discharge works down to −20°C.

Will it work for a golf cart or a trolling motor?

Not for a golf cart — this is a 12V leisure / deep-cycle pack, not a traction battery for the high continuous drive current of a golf-cart system. It is well suited to an electric trolling motor on a boat (several buyers report a full day on one charge), as well as campervans, motorhomes, off-grid cabins, home solar storage and camping.

What about the weight, warranty, shipping and returns?

The pack weighs 26kg net (27kg gross) — plan a two-person lift. The price is €369.99 EUR, in stock and new. Shipping is free to 15 European countries (1–3 days handling plus 2–7 days transit), with 30-day returns by post. The warranty is 3 years against a ~10-year design life, so the covered period is shorter than the expected service life at light use.

## Guides & comparisons

Go deeper before you buy:

[Best 12V 300Ah (4kWh) LiFePO4 batteries in Europe 2026 (11 models ranked)](https://gesike.com/blogs/news/best-12v-300ah-4kwh-lifepo4-batteries-in-europe-2026-gsike-vs-litime-renogy-redodo-power-queen)

[GSIKE 300Ah vs LiTime vs Renogy: the European head-to-head](https://gesike.com/blogs/news/gsike-12-8v-300ah-vs-litime-vs-renogy-the-european-12v-300ah-lifepo4-head-to-head)

[100Ah vs 300Ah vs 25.6V 100Ah: which capacity to choose](https://gesike.com/blogs/news/100ah-vs-300ah-vs-25-6v-100ah-choose-your-lifepo4-battery-capacity-for-rv-solar-cabin-with-gsike)

[Build a 12V LiFePO4 off-grid bank: 4P4S to 64.3kWh, 14.4V charger, 100A BMS](https://gesike.com/blogs/news/how-to-build-a-12v-lifepo4-off-grid-home-storage-bank-with-gsike-300ah-sizing-4p4s-to-64-3kwh-14-4v-charger-100a-bms)

 

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## Details

- **Price:** 369.99 EUR
- **Vendor:** GSIKE
- **Type:** LiFePO4 Battery
- **Tags:** Original

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 369.99 EUR | In stock |

## Images

- GSIKE 12.8V 300Ah LiFePO4 Battery 4019.2Wh, 100A BMS
- GSIKE 12.8V 300AH Lithium Energy Storage Battery for Solar Power System
- GSIKE 12.8V 300AH Lithium Energy Storage Battery for Solar Power System
- GSIKE 12.8V 300AH Lithium Energy Storage Battery for Solar Power System
- GSIKE 12.8V 300AH Lithium Energy Storage Battery for Solar Power System
- GSIKE 12.8V 300AH Lithium Energy Storage Battery for Solar Power System
- GSIKE 12.8V 300AH Lithium Energy Storage Battery for Solar Power System
- GSIKE 12.8V 300AH Lithium Energy Storage Battery for Solar Power System
- GSIKE 12.8V 300AH Lithium Energy Storage Battery for Solar Power System
- GSIKE 12.8V 300AH Lithium Energy Storage Battery for Solar Power System

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> Source: [Gsike](https://gesike.com/products/gsike-12-8v-300ah-lithium-energy-storage-battery-for-solar-power-system)
> Updated: 2026-10-19