Must agree with DCM here if you are not sponsored and you can get a bargain go for it if the cells are close to each other on the printed readout and you can solder the packs together yourself and discharge them after every run they should be ok. I run three packs of cells all year in both 2wd and 4wd and never had a problem oh and snoring cars in winter. I can never understand why people have 15 to 20 packs of cells, I would just get confused which where charged.