I know the modern chargers have digital readings but this older one (from the 1990s I think) doesn't really have an exact reading to see whether or not its overcharging. Trying to see if I can recharge bad-blocks prior to buying a replacement. thanks.
That charger is designed for a different battery chemistry. It could theoretically charge a block of Prius batteries, but you would not be able to trust its "fully automatic digital smart control" system. That is kind of a big deal- you'd need to set up a voltage meter and be ready to intervene if anything went sideways. In other words you would want to watch it like a hawk for fire safety, and it wouldn't necessarily be the kindest way to charge that block. But it could be done.
UPDATE: I managed to use the above charger for a hybrid battery cell. it can be used you just have to monitor it. I had a battery cell that had 6.5 voltage and after 30 minutes it went up to 8.3V. After resting it went back down to 8.0. The rest average between 7.4V and 7.6V. HOWEVER, there is a string of 4 blocks that are not accepting charging and immediately going into "fault" i assume because of low charge. There are 8 cells or 4 blocks on the passenger side of the battery (away from the connectors). For dead 12V batteries I know you can trick 12V batteries to charge by using jumper cables connected to a dead 12V battery and then connecting the other end of the jumper cables to the healthy 12V battery (also you while charging this healthy battery). it tricks the dead 12V into waking up. should I attempt this with the hybrid battery dead-cells that are dead/low voltage?
