With the same 100A BMS, doubling the voltage from 12.8V to 25.6V doubles the continuous DC ceiling: 12.8V×100A = 1280W, while 25.6V×100A = 2560W. That is why this pack can run an 1800W appliance (1800 < 2560), whereas a 12V 100Ah tops out at 1280W and cannot. For the same wattage the current is halved, so the runs cooler and you can use thinner cables with less voltage drop. You pay about €120 more than the 12V 100Ah for that power headroom and the 2.56kWh of energy. These are the eleven accurate official images (main unit first). Two marketing infographics are deliberately excluded: one overstates the cycle count and one labels a higher one-second peak current — neither figure is used on this page. None of the excluded numbers appear here. A remote cabin relies on it for warm light and device power after the panels stop generating, across cloudy days. Same GSIKE line, three SKUs. This page sells the 25.6V 100Ah (the 24V-class pack). The table below compares it against the two 12V-class siblings so you can choose by voltage and use case. The decisive difference: at 25.6V the same 100A BMS delivers 2560W — double the 1280W of the 12V 100Ah — while pulling half the current for the same watts.

No. This is an 8S1P 25.6V pack that needs a 28.8–29.2V CC/CV charge profile (28.8V ±0.4V), with a 20V cut-off. A standard 12V charger finishes at roughly 14.2–14.6V — less than half of the required charge voltage — so it will never fully charge this battery and could leave the cells chronically under-charged. Use a dedicated 25.6V LiFePO4 charger rated 20–100A. 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 12 five-star and 2 four-star reviews (Anna Nowak and Kari Virtanen), averaging 4.857, rounded to 4.9. On a workbench it charges from the 28.8V source and supplies bench lighting, pumps and chargers — the 20V cut-off protects the cells. This 25.6V pack is the direct replacement for two 12V 100Ah lead-acid batteries wired IN SERIES to make 24V . Because LiFePO4 safely delivers close to its full capacity while flooded lead-acid is limited to about 50% depth of discharge, one GSIKE 25.6V 100Ah gives roughly 2.1× the usable energy of that lead-acid pair.

Yes. This pack is the direct replacement for two 12V 100Ah lead-acid batteries wired in series to make 24V. Those two lead-acid cells give about 1200 usable Wh at a 50% depth of discharge, while this LiFePO4 delivers the full ~2560 usable Wh near 100% DoD — roughly 2.1× the usable energy, in one 21.15kg unit instead of ~55–60kg of lead. Keep it on the 24V bus; do not parallel it with 12V packs. We upgraded our solar storage from a pair of 12V lead-acid batteries to this single 25.6V 100Ah unit and the change has been remarkable, because the higher voltage means far less current loss through the cables and the usable capacity easily covers our whole evening load, and the fact that it is lighter and a quarter smaller than the old setup while delivering two times the energy makes it a no brainer for anyone running a solar system at home. Mounted on a rack beside the switchgear, it stores daytime solar and covers the evening load, expandable later in parallel. Keep every continuous load at or below the 2560W ceiling. The 1800W row is valid because 1800 < 2560 — that is the whole point of the 24V class over a 12V 100Ah (which tops out at 1280W and could not run it). When running through a separate 24V inverter, derate by about 90–95% efficiency and leave depth-of-discharge headroom.

It is valid: 1800W is below the 2560W DC ceiling, so it runs continuously rather than triggering the BMS. Dividing 2560Wh by 1800W gives about 1.42 hours. On the runtime table you also get 50W→51.2h, 300W→8.53h, 1000W→2.56h and, at the full 2560W ceiling, about 1.0h. Through a separate 24V inverter, derate by 90–95% efficiency and leave DoD headroom. I run a small workshop with a solar setup and this battery has been powering my tools and lighting reliably for months, and the 100A continuous discharge current means even my heavier equipment runs without any noticeable voltage drop, and knowing that the cells are rated for more than six thousand cycles at full depth of discharge gives me real confidence that it will last for many years to come. The steady 100A discharge gives a trolling motor smooth thrust without sag — buyers report a full day on one charge. The battery supports parallel and series building. Two units in series (2S) give 51.2V / 5.12kWh — the common 48V-class setup. 4P4S = four in parallel × four in series: 16 units total = 40.96 kWh (4S raises the voltage to 102.4V ; 4P raises capacity to 400Ah ; 102.4V × 400Ah = 40,960Wh).

No. This is a single 24V-class (25.6V) bus — do not wire it in parallel with 12V packs, and do not treat it as a 12V parallel-bank replacement. When you expand, add units that are identical in model and matched within about one month of production / charge history. Mixing new and heavily-used cells in one bank causes imbalance and shortens life; keep the whole bank on the 28.8V charge profile with the 20V cut-off. We live in an area where power cuts happen more often than we would like, so we installed this battery as a backup for our essential home loads, and it has carried us through every outage without a single problem, switching over instantly and holding its charge perfectly even when the grid was down for several hours at a time. Here the battery sits beside a separate 24V-class inverter — remember the pack itself is a battery, not an inverter, and must be matched to 24V gear. On a wooden bench base it runs the fridge, water pump and chargers through the evening — the 2560W ceiling covers a compact 24V leisure load.

Two units in series (2S) give 51.2V and 5.12kWh — that is the common "48V" nominal setup, and it is the usual route if you need a 48V-class inverter. At the top end, 4P4S (four parallel × four series) = 16 units for 102.4V and 400Ah, i.e. 40.96kWh. Always match identical units within about a month before wiring them in series or parallel. What really impressed me is how quickly this battery accepts a charge from my solar panels compared with the lead-acid bank I used before, because the much higher charging efficiency means I capture far more of the available sunlight, and in practice this has noticeably increased the amount of stored energy I have available in the evening, which is exactly what I was hoping for. Wire two of these in series to reach 51.2V / 5.12kWh — the common 48V setup — matching identical units within a month of age. Here the battery sits beside a separate 24V-class inverter — remember the pack itself is a battery, not an inverter, and must be matched to 24V gear.

A 25.6V LiFePO4 charger delivering 28.8–29.2V CC/CV at 20–100A, with the battery's 20V cut-off respected. The terminals are M8 bolts (8mm bolt / 12mm nut), so fit battery lugs that match an M8 stud and size the cables for up to 100A continuous at 25.6V — thicker short cables keep voltage loss low. Because this is a 24V pack, pair it with a 24V-rated inverter, not a 12V unit. When you calculate the total cost of ownership, this battery is honestly a bargain, because it is designed to last more than ten years with a three year warranty and requires absolutely no maintenance, whereas our old lead-acid batteries needed replacing every couple of years, and the eco-friendly lithium chemistry means we are also doing something good for the environment. With the same 100A BMS, doubling the voltage from 12.8V to 25.6V doubles the continuous DC ceiling: 12.8V×100A = 1280W, while 25.6V×100A = 2560W. That is why this pack can run an 1800W appliance (1800 < 2560), whereas a 12V 100Ah tops out at 1280W and cannot. For the same wattage the current is halved, so the runs cooler and you can use thinner cables with less voltage drop. You pay about €120 more than the 12V 100Ah for that power headroom and the 2.56kWh of energy. These are the eleven accurate official images (main unit first). Two marketing infographics are deliberately excluded: one overstates the cycle count and one labels a higher one-second peak current — neither figure is used on this page. None of the excluded numbers appear here.

No. The charge window is 0°C to 55°C — do not charge below 0°C, because charging a LiFePO4 cell when it is cold can cause lithium plating and damage. It will still discharge down to −20°C. Unlike some rivals with a self-heating element or low-temperature charge cut-off, this pack has no heater and no app, so mount it where the space stays above freezing in winter. We use this battery with our electric trolling motor and it has performed flawlessly all season, because the high discharge current means the motor gets full power even under heavy load and there is no noticeable sag like we used to see with lead-acid, and the surge capability of 400A for a second handles the start-up current without any trouble at all. No. This is an 8S1P 25.6V pack that needs a 28.8–29.2V CC/CV charge profile (28.8V ±0.4V), with a 20V cut-off. A standard 12V charger finishes at roughly 14.2–14.6V — less than half of the required charge voltage — so it will never fully charge this battery and could leave the cells chronically under-charged. Use a dedicated 25.6V LiFePO4 charger rated 20–100A. 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 12 five-star and 2 four-star reviews (Anna Nowak and Kari Virtanen), averaging 4.857, rounded to 4.9.

The product-specific diagrams we use as the headline give 520×250×320mm over the terminals and 21.15kg net. Other documents list slightly different case and box figures, most likely the bare ABS case versus the packaged / shipping dimensions rather than a second product. These alternate numbers are collected in the specification note on this page, and you should confirm the true case and box dimensions with the merchant before designing a battery bay. We started with two of these batteries in parallel and the expandable design meant adding more units later was completely straightforward, because the system simply scales up as our energy needs grow, and now we have plenty of stored capacity to cover our whole household through the night, which has genuinely transformed how much solar energy we manage to use ourselves. Yes. This pack is the direct replacement for two 12V 100Ah lead-acid batteries wired in series to make 24V. Those two lead-acid cells give about 1200 usable Wh at a 50% depth of discharge, while this LiFePO4 delivers the full ~2560 usable Wh near 100% DoD — roughly 2.1× the usable energy, in one 21.15kg unit instead of ~55–60kg of lead. Keep it on the 24V bus; do not parallel it with 12V packs. We upgraded our solar storage from a pair of 12V lead-acid batteries to this single 25.6V 100Ah unit and the change has been remarkable, because the higher voltage means far less current loss through the cables and the usable capacity easily covers our whole evening load, and the fact that it is lighter and a quarter smaller than the old setup while delivering two times the energy makes it a no brainer for anyone running a solar system at home.

The 400A figure is a one-second pulse for startup inrush, not a continuous rating; one excluded marketing graphic labels a higher one-second peak, which we have not used — confirm the true peak with the merchant. The pack is priced at €279.99 struck from €420.00, in stock and new, with a 3-year warranty against a ~10-year design life. Shipping is free to 15 European countries (1–3 days handling plus 2–7 days transit), with 30-day returns by post. You can tell from the build quality that this is a properly engineered product, because everything from the casing to the BMS feels solid and well thought out, and after several months of daily cycling in our home energy system it still performs exactly as it did on day one, and with its ten year design life I fully expect it to serve us faithfully for many years. It is valid: 1800W is below the 2560W DC ceiling, so it runs continuously rather than triggering the BMS. Dividing 2560Wh by 1800W gives about 1.42 hours. On the runtime table you also get 50W→51.2h, 300W→8.53h, 1000W→2.56h and, at the full 2560W ceiling, about 1.0h. Through a separate 24V inverter, derate by 90–95% efficiency and leave DoD headroom. I run a small workshop with a solar setup and this battery has been powering my tools and lighting reliably for months, and the 100A continuous discharge current means even my heavier equipment runs without any noticeable voltage drop, and knowing that the cells are rated for more than six thousand cycles at full depth of discharge gives me real confidence that it will last for many years to come.