Do not buy Revov products

I bought a Revov 12 Volt 200 Ah li fe battery three years ago. The battery performed well for just over 2 years. Then both the charge and discharge ports switched off and I could not switch it back on. After updating the app on my Cell, I tried again unsuccessfully. Even the Suppliers could not get it back on. The unit was sent to the manufacturers in Cape town. After inspecting it, the technician reported as follows. “They can break the casing, balance the cells, repackage it in a new casing, and it would be good again”. I would have had to pay the cost of a new casing.

This did not make any sense to me as the smart battery bms has a cell balancing feature and last time I looked the cells were well balanced. I responded that the battery was still in the guarantee period and they would have to fit the bill. They refused.

I had the battery dispatched to a reputable specialist on renewables. They broke the casing, disconnected and reconnected the bms after that the battery worked 100%, but the broken casing made it unserviceable.

We strongly suspect that the bms firmware/software had a bug causing the problem. Connecting and disconnecting the bms reset the battery.

On these batteries (unlike most other smart devices) it is not possible to update the bms firmware or software via the bluetooth connection. Therefore the need to break the case.

For this oversight now cost me around R 11 000.

Interestingly, the supplier stoped stocking Revov batteries for the return rate was approximately 30% with Revov not honouring their warrantees in most cases.

I would certainly not recommend any to buy Revov products.