shudders under hard acceleration

[jiml]

my 36 volt 2000 cc shudders under acceleration ( forward only ). Batteries range from 8.03 to 7.96 and one with 5.97. Voltage is 35.5 under full load. Any ideas??

 

[HotRodCarts]

Welcome to the forum.

Are you sure it's a 36 volt cart? From looking at the voltages you posted it looks like you have a 48 volt cart with six 8 volt batteries. Those voltage numbers are way to low. I'd say it's batteries causing your shuddering problem.

 

[golfdog]

Very strange readings for 6volt batteries. Your 5.97 and 35.5 values indicate batteries discharged by +- 60 % but not sure where the 8 volts comes from. Test all batteries open circuit voltage after charging (leave dormant for 6 hours before testing) they should read 6.37v if fully charged. (38.2v across the pack) any discrepancies should be investigated.

 

[shadowman]

sure does sound like a battery issue even 1 bad batt. will cause this so go over all of them ........test them, load test them and check cells with a hydrometer.......................................................