AlanL

I have an Axpert 3K [plus] using 2 x 105 AH batteries x 24v system with 4 solar panels. After load shedding last Friday, Eskom power came on and the batteries started re-charging, but the lower part of the inverter started to overheat and smoke. I by-passed the local load so that the inverter only had to handle the charging current [set at 30A], and the fan, going flat out, slowly bought the heat down. I put the local back on to the inverter and everything was OK. My question is, what happened here? Only 3 things can cause overheating - Over-current, no fan or charging at maximum for too long. The system is set to "SOL".

Good morning, I am on the grid and have 4 solar panels going through an Axpert 3kVA inverter. The batteries are 2 x 12V Deltec 105 Ahr Deep Cycle running a 24V system. I need to replace the batteries and need to know a suitable replacement ... should I go Lithium Ion? Thanks in anticipation, Alan

Thanks for the reply ... it's very much what my installer has just said.

Hi, I'm new and just joined today. I recently added solar panels to my 3kVA Axpert and since then I've noticed that when Eskom comes back on after load shedding, the batteries are charging well beyond the 27.5V setting [29.2] and at a fairly high charge rate ... I turn the inverter off-on and everything returns to normal. The display now shows 27.5 and trickle charges for a short while before switching out. It is set for "sol" ... is this right?