Yes, for the same usable 12V capacity. One GSIKE 12.8V 100Ah delivers ~1216–1280 usable Wh at ~95–100% depth of discharge, whereas a 12V 100Ah flooded lead-acid is limited to about 42% DoD — roughly 504 usable Wh. So one GSIKE replaces two 12V 100Ah lead-acid batteries wired in parallel (same 12V). Do not wire them in series, which would produce 24V and is a different system.

You need a lithium / LiFePO4-capable charger or solar controller set to CC/CV at 14.4V ±0.2V, with a recommended charge current of 20A (0.2C; the BMS allows up to 100A). A legacy lead-acid charger that only floats at 13.5–13.8V without a LiFePO4 charge profile will not fully charge this battery. The battery itself is not a charger — it only stores and releases power.

No — the charge window is 0°C to 50°C and the BMS stops charging around 55°C. Do not charge below 0°C. Discharge works down to −20°C, and storage should be between −10°C and 50°C at roughly 50% charge. Unlike some self-heating competitors, this unit has no low-temperature charging function, so warm the space before charging in cold weather.

Based on 1280 Wh divided by the load: a 50W LED/phone load runs ~25.6h, a 100W laptop-and-lights load ~12.8h, a 120W router-and-fan load ~10.67h, a 300W compressor fridge ~4.27h, a 500W fridge+TV+fan load ~2.56h, a 600W load ~2.13h, an 800W load ~1.6h and a 1000W load ~1.28h. When running through a 12V inverter, derate by about 90–95% inverter efficiency and leave headroom on depth of discharge.

Yes. The maximum configuration is 4P4S: four in parallel times four in series = 16 units, giving 51.2V and 400Ah for 20.48 kWh. 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.

No. It is an energy-storage battery — it stores 12-volt DC power and releases it. It has no built-in charger and no built-in inverter, so it has no mains AC outlet. To charge it you need a 14.4V LiFePO4 charger or solar controller; to run 230V appliances you connect a separate 12V inverter. The 400A rating is a one-second pulse for startup inrush, not a continuous output.

No. This is a 12V leisure / deep-cycle battery rated for RV, camper, caravan, boat/trolling-motor, camping, off-grid solar and home-backback use. It is not designed for the high continuous drive-current profile of a golf cart. Choose a purpose-built traction battery for that application.

The built-in 100A BMS guards against over-charge, over-discharge, over-current, over-temperature and short-circuit events, with the discharge cutting off around 10V. It allows 100A continuous charge and 100A continuous discharge, and a 400A pulse for one second to absorb motor or fridge startup inrush without sagging. Self-discharge stays under 3% per month.

It uses M8 bolt terminals (8 mm bolt, 12 mm nut). Fit ring (lug) terminals sized for your cable current and keep runs short to limit voltage drop — especially at 12V, where high currents make cable thickness matter. For a 16-unit 51.2V / 400Ah bank, follow the matched-battery wiring guide and the 14.4V charge profile.

The price is €159.99 EUR, in stock and new. Shipping is free to 15 European countries (GB, DE, FR, IT, ES, NL, BE, AT, SE, DK, FI, IE, PT, PL, CZ) with 1–3 days handling plus 2–7 days transit, and returns run for 30 days 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 — factor that into your total-cost-of-ownership plan.