Guru
Joined: 15/07/2006
Location: AustraliaPosts: 676
| Posted: 01:06am 06 Aug 2012 |
Last week went camping with a bunch of year eight students. Too much fun and very little sleep.
Home on Friday, went to bed early, very tired and forgot to plug in. Next morning discovered the 12v battery had drained its last and one cell with voltage reversed. They don't like being drained empty! I tried to charge it. To start with seemed to take a charge but would not go passed 1.15v. Removed chargers and immediately dropped back to below zero.
So removed it. It was hard to get out with the ends still fixed in the mounting frame. Very much swelled, even the top and edges.
I decided to put in a cell that was damaged in transport (split). It apparently had leaked out a bit of fluid? Dad used a soldering iron to melt over the crack. Charged it several weeks ago and was still holding charge. Fitted, charged and tested capacity on discharge. I figure it has about 50ah. Originally a 90ah cell. Should do me for a while. I don't normally use that much. It will be interesting to see if it can last.
Trev @ drivebynature.com