Home inverter weird charging problem

Thread Starter

rama alagappan

Joined May 11, 2019
Hi all,
I have a sine wave inverter 1450w 12v attached to a 12v tubular battery. Battery is 5years old. The battery voltage and backup are good. But every time during the charging .. boost charge- it charges at >16v for few seconds and returns to 14.4 v.and also during this the battery starts to bubble and release gases..
float charge - @13.4 v is ok..
I have changed the entire PCB of the inv.
Still problem is persisting..
Expert opinions please..
Thanks in advance