Hi, i am nearing the completeion of my current build, this is my first venture into lipo, i am using 6x 6s 8000mah 30c zippy lipo's. The 6 packs will be arranged in 3 pairs of 2 permanently parralelled packs (main cables and balance leads) these 3 pairs will be connected in series (main cables only) to run the bike on 18s 2p. For charging the 3 permanently parralleled packs will all be connected in parralel including the 3 balance leads from each pair via a 25 pin D-sub connector on my charger balance lead and my series/parralel change over switch for the main leads so that my 306b icharger can charge the whole pack as 6s and balance all of the cells in their 6p groups. the change over switch and D-sub have been constructed so incorrect connection accidents are impossible (I will show it off soon)
My question is with the pack configured like this and balanced every charge what should i set the LVC in the CA to? i will be using the CA throttle over ride to cut the power and control the LVC which they do very well. i will monitor the individual cells very closly during the first few charge cycles by charging to 4.0v then disconecting the balance leads to see if all the cells are closely matched. and check them again after the first few discharges.
My thoughts where to set the LVC to 66.6v (3.7v p/cell) then if i get stranded i can drop it 1 volt to 65.6v (3.64v) to help with limping home. Or do some of the more experienced lipo users have reason to think i should do it differently? could i set it lower, is there a benefit to the total AH i will get, i know they go over the cliff around this voltage and dont want to risk damaging them.
Some more info, the max current draw will only be 40a into a mid mounted HS3540, to start with anyway
Thanks Simon.
My question is with the pack configured like this and balanced every charge what should i set the LVC in the CA to? i will be using the CA throttle over ride to cut the power and control the LVC which they do very well. i will monitor the individual cells very closly during the first few charge cycles by charging to 4.0v then disconecting the balance leads to see if all the cells are closely matched. and check them again after the first few discharges.
My thoughts where to set the LVC to 66.6v (3.7v p/cell) then if i get stranded i can drop it 1 volt to 65.6v (3.64v) to help with limping home. Or do some of the more experienced lipo users have reason to think i should do it differently? could i set it lower, is there a benefit to the total AH i will get, i know they go over the cliff around this voltage and dont want to risk damaging them.
Some more info, the max current draw will only be 40a into a mid mounted HS3540, to start with anyway
Thanks Simon.