Valve Regulated Lead Acid
battery

Discover the Felicity Solar FL-OPzV-500AH-2V battery with 2V voltage and 500Ah capacity, ideal for reliable energy storage.
The Felicity Solar FL-OPzV-500AH-2V battery is engineered for optimal performance in energy storage systems. With a robust 2V single cell and a capacity of 500Ah at a 10-hour rate, this battery is designed to deliver consistent power and reliability.
| Voltage Per Unit | 2V(single cell) |
|---|---|
| Battery Type | Lead-acid gel (OPzV tubular plate, VRLA) |
| Capacity | 500Ah@10hr-rate to 1.80V per cell @25°C |
| Weight | Approx. 38.5 Kg |
| Max. Discharge Current | 2000A (5 sec) |
| Internal Resistance | Approx. 0.65 mΩ |
| Operating Temperature Range | Discharge: -40°C~70°C |
| Optimal Operating Temperature Range | 25°C±5°C |
| Float Charging Voltage | 2.25 to 2.3 VDC/unit Average at 25°C |
| Maximum Charging Current | 100 A |
| Cycle Service | 2.37 to 2.40 VDC/unit Average at 25°C |
| Self Discharge | Self-discharge ratio less than 2% per month at 25°C |
| Terminal | Thread insert & Bolt (F10-M8) |
| Container Material | A.B.S. (UL94-HB), and UL94-VO is optional |
| Dimensions | 166(L)×206(W)×506(H) mm |




Felicity battery not charging? Below 0°C the BMS blocks the charge, a charge voltage under 57.6 V never fills the pack, and codes C01–C08 explain the rest.
Read: Felicity Battery Not Charging? Codes, Causes & Fixes →A long outage drained the battery, the grid came back shaky, and now there is a code on the screen. What 04, C02, 27 and the grid-return alarms really mean.
Read: Felicity Inverter Error After a Power Cut? What It Means →Inverter cutting out on hot afternoons? Error 18, T-REX 35/F35, E-CHO E12/E13, MPPT 87 and battery C09 — the official Felicity heat codes and their fixes.
Read: Felicity Inverter Overheating? Error 18 & Heat Codes →The FL-OPzV-500AH-2V battery has a voltage of 2V per unit and a capacity of 500Ah at a 10-hour rate to 1.80V per cell at 25°C. It can deliver a maximum discharge current of 2000A for 5 seconds.
Yes, the FL-OPzV-500AH-2V battery is designed to be compatible with various solar energy systems, provided they support 2V cells and the specified charging and discharging parameters.
The battery measures 166mm in length, 206mm in width, and 506mm in height, with an approximate weight of 38.5 kg. It is made from A.B.S. material, with an optional UL94-VO rating.
The battery should be installed in a well-ventilated area, maintaining the optimal operating temperature range of 25°C±5°C. Proper terminal connections using the provided F10-M8 bolts are essential.