100Ah: 1.28kWh nominal energy
LOW-VOLTAGE BATTERY
How to Choose a 12V 100Ah or 200Ah LiFePO4 Battery
Capacity is a runtime decision, not a complete system design. Begin with daily energy use, peak power and charging capability.
UPDATED
200Ah: 2.56kWh nominal energy
Confirm current and charging limits before choosing capacity
Build an energy budget
List each load, its power and daily operating time.
- Add daily watt-hours instead of choosing from Ah alone.
- Include design margin for real operating conditions and future loads.
Separate energy from power
A larger capacity does not by itself confirm that a peak load is supported.
- State continuous current, peak current and surge duration.
- Check inverter input current and protection coordination.
Review the charging system
Every charging source must be compatible with the intended battery configuration.
- Provide charger, solar controller and alternator-side equipment details.
- Confirm cable, fuse, disconnect and enclosure requirements with the integrator.
BUYER QUESTIONS
Buyer questions
Does 200Ah provide exactly twice the runtime?
Nominal energy is twice that of 100Ah at the same voltage, but actual runtime also depends on load, system losses, limits and operating conditions.
Should I use one 200Ah battery or two 100Ah batteries?
Compare current sharing, space, wiring, serviceability and the approved parallel configuration before deciding.
RELATED PRODUCTS
Apply the decision to featured models
12.8V-100Ah
12.8V-200AhAPPLICATION PATHS