View Single Post
Old 12-13-2005, 03:11 PM
Tech Champion
iTrader: (4)
AdrianM's Avatar
Join Date: Aug 2001
Location: Tampa, FL
Posts: 5,914
Trader Rating: 4 (100%+)

Originally Posted by Ted Flack
If you discharge a pack down to 5.4 volts one cell could be a lot higher than
.90. I thought the idea was to get all the cells down to .90 on a tray, not zero. A Novak tray stops at .90 per cell and I am sure other trays do the same thing, I have trays that do that because I have checked with a volt meter after they were on the tray for days. I don't believe storing is the issue, it is to start the charge when all cells are at .90. That is why Danny wants us to put the pack on a tray before charging.

It's easy to check the trays to see if they are IB safe. If you look at the bottom of the tray and see a diode in series with the resistor the tray will stop flowing current at at least 0.7v per cell (Higher if there is a small resistor before the diode).

It's funny but all the really old trays were like this and over the last 2 years the diodes started to get left off so the batts would get to 0.0v.
AdrianM is offline  
Reply With Quote