Hi, Joaquin, and welcome.joaquinsfy wrote: Hi,
My name is Joaquin Custodio, from Barcelona, Spain.
Sure, you can pump current into the battery from the utility AC input. As to whether it is safe or not to charge those 18650 cells, I don't know. Since you mention 14S, I assume that's a 4.2 V chemistry; my understanding is that these are not so trivial to charge safely. I think you need a temperature sensor to do it properly.Can i use the PIP-4048MS to charge the packs using AC from the utility?
If Peter Matthews is using a PCM60X, then you essentially have one of those inside your PIP. The firmware can also turn the inverter around so that it charges the battery; during this time, the utility is also powering the loads. You can be charging from solar and utility at the same time. They do a pretty good job of getting the two chargers (utility and solar) to co-operate.