3 kWh of stored energy
250 Ah at 12 V, rated at the 10-hour rate to 1.8 V per cell at 25 °C.

A 12 V gel block rated 250 Ah — 3 kWh of nominal energy — with 3.8 mΩ internal resistance, a 2500 A maximum discharge current and a 70.1 kg case.
In stock
The Felicity Solar G12V250AH is a 12 V gel battery rated 250 Ah at the 10-hour rate to 1.8 V per cell at 25 °C, which is 3 kWh of nominal energy. Its internal resistance is 3.8 mΩ, it accepts up to 75 A of charging current, and it weighs 70.1 kg. Six cells sit in one case measuring 522 × 260 × 220 mm. Charge to a maximum of 14.6 V, hold cyclic service between 14.4 V and 14.6 V, float between 13.6 V and 13.8 V, and stop the discharge between 9.6 V and 10.5 V. The maximum discharge current is 2500 A. Charging is rated from 0 °C to 50 °C and discharging from -20 °C to 60 °C, with 20 °C to 30 °C the optimal band, and storage spans -20 °C to 60 °C. Self-discharge stays under 3% per month, so a shelved unit keeps its charge between jobs. We are an authorised Felicity Solar distributor, and the G12V250AH carries a warranty of 2 Years.
Specifications last updated 23 March 2026
| Battery Type | Gel |
|---|---|
| Cut-Off Voltage | 9.6-10.5 V |
| Cycle Service Voltage | 14.4-14.6 V |
| Float Charging Voltage | 13.6-13.8 V |
| Internal Resistance | 3.8 mΩ |
| Max Charging Current | 75 A |
| Max Charging Voltage | 14.6 V |
| Max Discharge Current | 2500 A |
| Nominal Capacity | 250 Ah |
| Nominal Energy | 3 kWh |
| Nominal Voltage | 12 V |
| Self-Discharge per Month | <3 |
| Voltage per Unit | 12 V |
| Capacity Rating Basis | 10hr-rate to 1.8V per cell @25°C |
|---|---|
| Cells per Unit | 6 |
| Charging Temperature Range | 0-50 °C |
|---|---|
| Discharging Temperature Range | -20 to 60 °C |
| Optimal Operating Temperature | 20-30 °C |
| Storage Temperature Range | -20 to 60 °C |








An off-grid house is sized by surge, battery energy and charge current - and the surge row is the one that starts your fridge and your pump. Here are the published figures across the Felicity inverters and batteries, with the arithmetic to use them.
Read: How to Run a Whole House on Solar in Khartoum →Extend your off-grid battery life with proper maintenance. Covers LiFePO4, gel, and lead-acid battery care, temperature management, and charge settings.
Read: How to Maintain Solar Batteries for Maximum Lifespan →Overcharging destroys batteries fast. Learn how to set correct charge voltages, use temperature compensation, and configure your Felicity IVPS to prevent damage.
Read: How to Protect Your Off-Grid Batteries from Overcharging →3 kWh. The G12V250AH is rated 250 Ah at 12 V, measured at the 10-hour rate to 1.8 V per cell at 25 °C, and its six cells sit in a single case.
75 A is the maximum charging current and 14.6 V the maximum charging voltage. Hold cyclic service between 14.4 V and 14.6 V, float between 13.6 V and 13.8 V, and charge only between 0 °C and 50 °C.
70.1 kg, in a case measuring 522 mm wide, 260 mm high and 220 mm deep. Plan a two-person lift and a shelf rated for that mass.
3.8 mΩ internal resistance and a maximum discharge current of 2500 A. Discharging is rated from -20 °C to 60 °C, with 20 °C to 30 °C optimal and a cut-off between 9.6 V and 10.5 V.