# GSIKE 25.6V 100Ah LiFePO4 Battery: 2560Wh/2560W for RV & Off-Grid | GSIKE US # GSIKE 25.6V 100Ah LiFePO4 Battery — 2560Wh, 2560W, 6000+ Cycles, for RV, Camper Van, Marine & Off-Grid Solar in the US **The GSIKE 25.6V 100Ah LiFePO4 battery (model GSK-25.6V-100AH) is an 8S1P, 24V-class energy-storage pack that stores 2560Wh and delivers up to 2560W continuous through a 100A BMS, rated for more than 6000 cycles at full depth of discharge in a 21.15 kg IP65 ABS case — built for the RV, camper van, overland, marine and off-grid cabin owner who needs real 24V power, not a 12V battery stretched thin.** 2560 Wh 25.6V / 24V class 8S1P 100A BMS 2560W ceiling 6000+ cycles 400A pulse / 1s 28.8V CC/CV IP65 M8 terminals up to 40.96 kWh bank ![GSIKE 25.6V 100Ah LiFePO4 battery, matte-black ABS case about 52 cm long with a 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/25.6v-100ah.webp?v=1781229409) **What this is (and what it is not).** Model **GSK-25.6V-100AH** is a 24V-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 kVA rating. Eight 3.2V cells are wired **8S1P** (8 in series, 1 parallel string) for **25.6V nominal**, the "24V class" figure American RV and marine systems use. Two numbers matter: it holds **2560Wh** (25.6V × 100Ah = 2.56 kWh) and its **2560W** DC ceiling (25.6V × 100A) is what lets it run an 1800W appliance — about double the 1280W of a 12V 100Ah. To charge it you need a **25.6V / 28.8V LiFePO4 charger**; to run 120V appliances you add a **separate 24V-rated inverter**. **Specification note — read before you size loads or fit a tray.** (a) **Size and weight:** the product diagrams give **520 × 250 × 320 mm** (L×W×H over the terminals) and **21.15 kg** net (~46.6 lb). Some family documents list slightly different bare-case and carton figures; treat those as the empty shell versus the shipping box and **confirm the true case and carton dimensions with the merchant** before cutting a tray. (b) **Pulse current:** plan around **400A for one second** of startup inrush — not continuous. One excluded marketing graphic for this pack labels a higher one-second peak; we have not used it. Treat 400A/1s as the planning figure and confirm the true peak with the merchant before wiring a high-startup load such as a large trolling motor. ## Manual specifications Parameter Value Chemistry / assembly LiFePO4 (LFP), **8S1P** — 8 × 3.2V cells in series, 1 parallel string Nominal voltage / class **25.6 V** nominal (the "24V class" bus) Rated capacity / energy **100 Ah / 2560 Wh** (25.6V × 100Ah = 2.56 kWh) Continuous current / power **100 A charge / 100 A discharge** = **2560 W** DC ceiling 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 module) Cycle life **\>6000 cycles at 100% DoD** @25°C / 0.5C (more cycles at 80% DoD) Charge settings **CC/CV**; charge voltage **28.8–29.2 V** (28.8V ±0.4V); use a **25.6V LiFePO4 charger, 20–100 A** Discharge cut-off **20 V ±0.5 V** end-of-discharge Internal resistance ≤20 mΩ Expansion **4P4S = 16 units = 40.96 kWh** (4S = 102.4V, 4P = 400Ah); 2S = 51.2V / 5.12kWh Terminals **M8 bolts** (8 mm bolt / 12 mm nut) Housing / ingress ABS housing, **IP65**; CE, RoHS, UN38.3 certified Weight / size (headline) Net **21.15 kg** (~46.6 lb); **520 × 250 × 320 mm** (L×W×H over terminals) Warranty / design life **3-year warranty**, roughly **10-year design life** ## Why a 24V 100Ah battery beats 12V for an American RV or cabin Most budget RV batteries in the US are 12V, and that is fine for a pop-up trailer running lights and a water pump. The moment you add a 120V residential-style fridge, a 12V/24V compressor fridge, a portable induction cooktop or a rooftop air conditioner, a 12V 100Ah bank hits a wall: its 100A BMA limits it to about **1280W**, and the high current needed for that wattage forces thick, expensive cables and costs you real voltage drop over distance. Step up to the same 100A BMS at **25.6V and the ceiling doubles to 2560W** while the current for any given wattage is cut in half. That is the whole reason American overlanders and cabin builders are moving to 24V house banks: thinner wiring, cooler runs, less sag and double the continuous power from the same BMS class. This GSIKE pack is a like-for-like replacement for the two 12V lead-acid Group 24/27 batteries many RVs ship with, wired in series to make 24V. It does not just match that bank in name — at roughly 100% usable depth of discharge it delivers about **2560 usable Wh**, against the roughly 1200 usable Wh you can pull from two lead-acid 100Ah cells before they are half empty. In one 46.6 lb box you get more usable energy than ~120 lb of lead, with no watering, no sulfation and no expected replacement every two to three years. The trade-off is honest: you must use a 24V charge profile and a 24V inverter, and you cannot parallel it with a 12V starter battery. ![GSIKE 25.6V 100Ah LiFePO4 pack detail](https://cdn.shopify.com/s/files/1/0729/3042/7041/files/25v_1.webp?v=1782115074) ![Terminal and case view](https://cdn.shopify.com/s/files/1/0729/3042/7041/files/25v_3.webp?v=1782115074) ![Cell and BMS view](https://cdn.shopify.com/s/files/1/0729/3042/7041/files/25v_5.webp?v=1782115074) ## Real-world use cases built around the 2560W ceiling ![Cozy modern motorhome living interior, a matte-black LiFePO4 lithium battery box about 52 cm long on a wooden bench seat, two silver M8 bolt terminals with hex nuts on top, blank dark-orange front plate, soft daylight](https://aka.doubaocdn.com/s/1QFpaLtjCe) ### Class C / Class A RV house battery Run the 120V fridge, the vent fan and device charging through a 24V inverter; recharge from roof solar or shore power with a 25.6V charger. ![Interior of a small off-grid log cabin at dusk, a matte-black LiFePO4 battery box about 52 cm long on a heavy pine plank shelf, two silver M8 terminals on top, blank dark-orange front plate, warm glowing pendant lamp, dark forest through frosted windows](https://aka.doubaocdn.com/s/K5faKvR7v5) ### Off-grid cabin backup Pair with a small solar array for lights, a DC pump and a chest fridge through the night; IP65 handles a damp mountain cabin. ![Under-seat locker bay of a modern travel trailer, a matte-black LiFePO4 battery box about 52 cm long strapped in with a hold-down strap, two silver M8 terminals on top, blank dark-orange front plate, routed black and red cables](https://aka.doubaocdn.com/s/7Wd9NW9mxm) ### Travel trailer / fifth wheel Drop into the under-seat locker of a travel trailer; the IP65 case and strapped mount handle road vibration. ![Built-in storage locker of a small fishing boat on calm water, a matte-black LiFePO4 trolling battery box about 52 cm long fitted inside, two silver M8 terminals on top, blank dark-orange front plate, a black electric trolling motor softly out of focus at the stern](https://aka.doubaocdn.com/s/InVVbWzhpl) ### Trolling / marine deep cycle The 400A one-second pulse absorbs motor startup; 100A continuous covers steady trolling draw without lead-acid sag. ![Home garage workshop, a matte-black LiFePO4 battery box about 52 cm long on a worn solid wooden workbench, two silver M8 terminals connected by thick red and black charging cables, blank dark-orange front plate, hanging tools softly blurred behind](https://aka.doubaocdn.com/s/UINybaFixL) ### Remote workshop / jobsite Run 24V power tools, LED site lighting and a small compressor off the 2560W ceiling between charges. ![Garage, two identical matte-black LiFePO4 battery boxes each about 52 cm long side by side on a wooden rack, two silver M8 terminals with hex nuts on top, blank dark-orange front plates, a thick red interconnector and black cable wiring the two in series](https://aka.doubaocdn.com/s/eOG4juxMKZ) ### Two-battery 51.2V bank Two units in series make 51.2V / 5.12 kWh for a 48V-class inverter; scale to 4P4S = 40.96 kWh for a whole-home system. ![Home electrical cabinet, on the left a matte-black LiFePO4 battery box about 52 cm long with two silver M8 terminals and a blank dark-orange front plate, cabled to a compact sealed plain dark-grey metal inverter box on the right with a blank closed front](https://aka.doubaocdn.com/s/PFuIg27QUk) ### Whole-home backup (with inverter) As a DC storage node feeding a separate 24V inverter for essential circuits during a utility outage. It stores energy; the inverter converts it. ## Runtime table — what 2560Wh will actually run Continuous load Example device Theoretical runtime (2560Wh) Through a 92%-efficient 24V inverter, ~85% DoD 50 W LED strip & modem ~51.2 h ~40 h 150 W TV + fan + lights ~17.1 h ~13.5 h 300 W Chest fridge (avg) ~8.5 h ~6.7 h 500 W Laptop stack + small fridge ~5.1 h ~4.0 h 1000 W 120V RV fridge + microwave-ish ~2.56 h ~2.0 h 1800 W Portable induction cooktop / 1500W heater + margin ~1.42 h ~1.1 h 2560 W BMS ceiling (100A) ~1.0 h do not plan at the limit These are planning estimates, not lab guarantees. Actual runtime depends on inverter efficiency, wiring loss, temperature, battery age and how hard the BMS cycles the pack. Keep a 10–20% state-of-charge buffer and never plan a full 2560W load for long periods. ## Objective pros and cons ### Pros - **Real 24V power class:** 2560W continuous / 2560Wh, roughly 2x a 12V 100Ah at the same 100A BMS. - **Cycle life:** >6000 cycles at 100% DoD, longer than many 5000-cycle US competitors. - **Energy density:** 21.15 kg / 46.6 lb for 2.56 kWh — a fraction of lead-acid weight. - **Expandable:** 2S to 51.2V, 4P4S to 40.96 kWh for cabin or home backup. - **Protected build:** 100A BMS, ABS case, IP65, M8 bolt terminals, UN38.3 shipped. - **Cost:** EUR 279.99 with a real EUR 420.00 strike — far below premium US 24V 100Ah brands. ### Cons - **No Bluetooth / app monitoring** and no built-in state-of-charge display. - **No low-temperature charge heating** — do not charge below 0°C; no self-heating element. - **You must supply a 25.6V charger and a 24V inverter**; it is not an all-in-one power station. - **Listed in EUR** on the storefront; confirm USD conversion at checkout for a US order. - **Two excluded infographics** quote different dimensions/peak; verify exact case size before building a tray. ## US shipping, returns and warranty 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. The pack carries a **3-year warranty** against a roughly **10-year design life**, and it ships UN38.3-certified as lithium content allows. It is sold new and in stock (SKU GSK-25.6V-100AH). The storefront lists this product in **EUR**; for a US purchase, confirm at checkout whether the site displays a converted USD price, and treat live US logistics and stock as subject to the cart at order time. ## FAQ — buying the GSIKE 24V 100Ah LiFePO4 for the US Should I buy a 24V 100Ah LiFePO4 battery for my RV or camper van instead of 12V? If your coach runs more than about 1000W of continuous load at once, the 25.6V pack is the better buy. With the same 100A BMS, a 12.8V 100Ah tops out at 1280W while this 25.6V 100Ah delivers 2560W, and at the same wattage the current is halved so your wiring runs cooler and loses less voltage. It stores 2560Wh (2.56 kWh) versus roughly 1280Wh from a 12V 100Ah. If you only run a few LED lights and a fan, 12V is cheaper; if you run a 120V RV fridge, a microwave or a portable air conditioner through an inverter, 24V is the right class. Can I charge this 24V battery with the 12V lithium charger I already own? No. This is an 8S1P 25.6V pack that expects a 28.8 to 29.2V CC/CV charge curve (28.8V +/-0.4V) and a 20V end-of-discharge cut-off. A 12V LiFePO4 charger stops near 14.2 to 14.6V, which is barely half the required charge voltage, so it would never top the cells up and could leave them chronically under-charged. Pair it with a dedicated 25.6V (24V-class) LiFePO4 charger rated 20 to 100A. Will this 24V pack drop in for the two lead-acid house batteries in my RV? Yes. It is the direct swap for two 12V 100Ah lead-acid batteries wired in series to make a 24V bank. Two lead-acid 100Ah cells deliver about 1200 usable Wh at a 50% depth of discharge, while this single LiFePO4 pack delivers about 2560 usable Wh near 100% DoD - roughly 2.1x the usable energy, in one 21.15 kg (about 46.6 lb) unit instead of roughly 120 to 130 lb of lead. Keep the whole bank on the 24V bus; do not parallel it with 12V packs. How long will it actually run my 120V fridge or a 1000W inverter? Raw math first: 2560Wh divided by your continuous wattage gives the theoretical hours. A 1000W load runs about 2.56 hours on paper; an 800W RV fridge compressor about 3.2 hours; a 150W TV plus lights about 17 hours. Through a separate 24V inverter, derate by 90 to 95% efficiency and keep a 10 to 20% DoD buffer. It is valid to run an 1800W appliance continuously because 1800W sits below the 2560W DC ceiling; at that draw you get about 1.4 hours before recharging. Can I parallel this 24V GSIKE with the 12V batteries already in my truck or boat? No. This is a single 24V-class (25.6V) bus. Wiring it in parallel with 12V packs, or treating it as a 12V drop-in, will fight the BMS and the charge profile. When you expand, add identical GSIKE 25.6V units matched within about a month of production and similar charge history. Two of them in series give 51.2V (the common '48V' nominal setup, 5.12 kWh); four parallel by four series reaches 40.96 kWh. What gauge cable and what inverter size do I need at 24V? Because the BMS allows up to 100A continuous at 25.6V, size the main battery cables for 100A on a 24V bus - typically 2 AWG copper for runs up to about 10 feet, 1/0 AWG for longer runs, with M8 ring terminals that match the bolt studs. The inverter should be rated for 24V DC input and sized so its continuous draw stays under 2560W; a 2000W or 3000W 24V inverter works, but remember the battery itself cannot source more than 2560W. Do not use a 12V inverter on this bus. Will it hold up on a trolling motor or in a damp boat compartment? Yes, within limits. The ABS case carries an IP65 rating, so rain, spray and a damp compartment are fine, and the 400A one-second pulse absorbs trolling-motor startup inrush without the voltage sag lead-acid is known for. The 100A continuous discharge is the planning ceiling for steady motor draw. Note the charge window is 0 to 55C, so keep it above freezing while charging; it still discharges down to -20C. How cold can it get before I worry about charging it? Do not charge this pack below 0C (about 32F). LiFePO4 cells charged while frozen can plate lithium and degrade permanently, and this unit has no built-in heater or low-temperature charge heater the way some premium rivals do. It will still discharge down to -20C. For winter RV or cabin use, mount it in a heated/insulated bay or add an external heater pad and a battery box so the cells stay above freezing during charging. The spec sheet says 520x250x320 mm and 21.15 kg - will it fit my existing battery tray? Use those headline figures for planning: about 52 cm long, 25 cm wide, 32 cm tall over the terminals, net 21.15 kg (about 46.6 lb). Some family documents list slightly smaller bare-case and boxed dimensions; those most likely describe the empty ABS shell versus the shipping carton rather than a different product. Measure your tray against the 520x250x320 mm footprint and confirm the true case and carton dimensions with the merchant before you build the tray. What is the price, warranty, shipping and return policy for the US? The pack is listed at EUR 279.99 struck from a EUR 420.00 regular price, in stock and new condition, SKU GSK-25.6V-100AH. It carries a 3-year warranty against a roughly 10-year design life. Shipping within the United States is free, with 1 to 3 days of handling plus 3 to 7 days of transit, and a 30-day return window by post. Note the storefront lists this product in EUR; confirm at checkout whether the US site displays a converted USD price before you order. ## Keep reading on the GSIKE 24V battery set [Best 24V 100Ah LiFePO4 Battery in the US (2026)](https://gesike.com/blogs/news/best-24v-100ah-lifepo4-battery-in-the-us-2026-gsike-vs-battle-born-litime-renogy-redodo-power-queen) How GSIKE stacks up against Battle Born, LiTime, Renogy, Redodo and Power Queen. [GSIKE vs Battle Born / LiTime 24V 100Ah](https://gesike.com/blogs/news/gsike-25-6v-100ah-vs-battle-born-and-litime-which-24v-100ah-lifepo4-wins-for-rv-and-off-grid) Head-to-head specs, price and the Final Verdict on which 24V 100Ah pack to buy. [12V vs 24V vs 48V LiFePO4: which voltage?](https://gesike.com/blogs/news/gsike-24v-vs-12v-vs-48v-lifepo4-picking-the-right-battery-voltage-for-your-rv-camper-van-or-off-grid-cabin) Pick the right bus for your RV, camper van or off-grid cabin. [Build a 24V 100Ah (2.56 kWh) battery bank](https://gesike.com/blogs/news/how-to-build-a-24v-100ah-2-56-kwh-off-grid-solar-rv-battery-bank-with-gsike) Charge, cables, inverter sizing and expansion, step by step. 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