If you really meant LiFePo cells, and it sounds like you did. liFePo cell have almost none existent self discharge rates. I have a cell that is far older then 2015 and never charged, once every few years I put a multimeter on it, it is still nearly fully charged and reads 3.3 volts right now. Their is a tiny amount of calendar lose for that chemistry if you use them or not, you might be down 1 or 2 percent off the new capacity. Either way they should be fine. Put a multimeter on them and if they read higher then 2.5 volts, charge them up they are just fine.
On Apr 1, 2018, at 2:36 PM, bordnerr001@gmail.com [electricboats] <electricboats@yahoogroups.com> wrote:
Due to a set of issues, my motor install has been postponed a number of years. As a result, the set of LiOn 100ah cells has been sitting on a shelf since March 2015. There are 16 x 3v cells, never connected, never installed, never charged. Are they still good? Or am I out the money and the batteries? Here in Honolulu HI there is a likely battery tech shop, so if there are any suggestions for tests etc. that would be welcome. The system looked tidy, "Elite Battery 300AH 48v system, 2 15A chargers 48v, 16 100AH cells, full EMS".
RBordner
Islander Freeport 36
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Posted by: "james@deny.org" <james@deny.org>
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