I have a 2013 rzr 800 50" I bought last year, ever since I got it seemed like it had a low cranking amp battery, would turn over once then pause for a few seconds and turn over faster and fire up. About 2 weeks ago I put a brand new Polaris battery in it and it fired right up for abouthe a week no problem then right back to the same thing turns over once then nothing for a few seconds then fires… did this for about a week then left me stranded it would turn over once then just click. figured I had a charging issue so checked all the connections, cleaned and sanded ever connector on the charging system, recharged the battery over night and put it all back together now it won’t turn over at all, turns once then clicks like the battery is dead even while hooked up to the jump pack. Any one have any ideas what may be wrong or where to start looking?