- Joined
- Apr 8, 2015
- Messages
- 521
- Reaction score
- 66
- Location
- Upstate NY
- My Car
- 71 Mach 1, 351c 4v, C6 trans, grabber blue with white interior
I was doing some work on the car where I was cranking the engine but NOT starting it. Well, eventually the battery discharged to where the engine wouldnt crank. I thought the battery would last longer than what I was doing. The battery is an AGM group 27 Autolite replica type.
When my Battery Tender Plus ( compatible with AGM batteries ) is attached the red light is on indicating a recharge as opposed to a solid green indicating "maintenance mode".
The battery is currently at 12.75v so does it need recharging and if so, how long would that take the Tender to accomplish?
As a additional question, how do you prevent the battery from discharging when doing a compression check ( or other engine work ) where the engine is always being cranked but not started??
When my Battery Tender Plus ( compatible with AGM batteries ) is attached the red light is on indicating a recharge as opposed to a solid green indicating "maintenance mode".
The battery is currently at 12.75v so does it need recharging and if so, how long would that take the Tender to accomplish?
As a additional question, how do you prevent the battery from discharging when doing a compression check ( or other engine work ) where the engine is always being cranked but not started??