Sizing, capacity, lead-acid replacement, wiring, charging, cold weather, trolling motors, fridge runtime, inverters, 12V vs 24V, BMS recovery and storage. Each guide ends with the models and the numbers you need.
If you only read one, start with sizing. The rest go deeper into the decision you are about to make.
A practical RV battery sizing guide: load audit, daily Wh, autonomy, inverter surge, 12V vs 24V, and which SEVENERGY model fits.
Model choiceCompare the four SEVENERGY models by usable energy, discharge current, weight, dimensions and bank limits — and pick the smallest pack that covers the load.
ComparisonUsable capacity, cycle life, weight, voltage sag, charging and cold-weather behaviour: a practical comparison for RV, marine and off-grid systems.
WiringHow series and parallel connections change voltage and capacity, the 12V 4S4P and 24V 1S4P limits, and the rules for a safe bank.
ChargingA practical charging guide for SEVENERGY 12V and 24V packs: charge voltage, current, LiFePO4 profile, DC-DC, MPPT and low-temperature cut-off.
Cold weatherWhat the BMS does at 0°C, how discharge behaves at −20°C, why these packs have no self-heating, and how to store and charge in winter.
MarineHow to size a 24V LiFePO4 battery for a trolling motor: motor current, hours of use, 24V 100Ah vs 200Ah, wiring and charging.
RuntimeRealistic runtime for a 12V compressor fridge on SEVENERGY 12V and 24V LiFePO4 packs, and the variables that change the answer.
System designCalculate inverter current, account for surge, and match 1,000W / 2,000W / 3,000W inverters to the four SEVENERGY models.
System designCurrent, cable loss, inverter size, charging and expansion: a practical decision guide for 12V vs 24V LiFePO4 systems.
TroubleshootingOver-voltage, under-voltage, over-current, short circuit and temperature protection: what each one means, how to recover, and when to stop.
MaintenanceState of charge, temperature, disconnecting loads, recharging every few months and returning the battery to service in spring.
Daily energy in Wh, and the system voltage. Once those are fixed, the model and parallel count follow.
Wh/day × days ÷ (0.8 × 0.85) ÷ V = Ah
0.8 = usable depth of discharge; 0.85 = inverter efficiency. Round up to the next model or parallel count.
Tell us the application and the load; we will point you at the guide and the model.