Battery voltage

[nvmycj]

Good day all!

When I turn on my battery, the voltage meter reads 12.2. Then with my LED’s and LED bar turn on, it drops to 11.2.

Just curious if that’s normal.

Thanks!

 

[DaleH]

Well your battery is only 50% charged, so I would say all bets are off until you find out if that battery is good or not. It doesn’t charge any higher than 12.4, the plates have sulfated. A good charged battery should be 12.7 or higher.

 

[senkosam]

Agree. My voltmeter reads over 13v for a full charge.

 

[jethro]

 

[nvmycj]

Well your battery is only 50% charged, so I would say all bets are off until you find out if that battery is good or not. It doesn’t charge any higher than 12.4, the plates have sulfated. A good charged battery should be 12.7 or higher.

Well crap!

I bought this thing several months ago and it's been in the back of the boat while I'm testing the wiring. Is it safe to assume that I should fully charge it and see what the voltage reads?

Thanks so much!!!

 

[nvmycj]

Thank you for this chart! It helped!!

 

[jethro]

Oh good, I'm glad! It's pretty handy.