01 CC slows going uphill-48v

[gdoss]

Just put new batteries and charged them fully. Total voltage 52.3 and each battery is 8.53+. THis cart has been sitting up for 3 years. Took it to battery source and let them install new batteries. It seems to work fine in every way, just not strong and slows on not so steep grades. I have been reading on this forum for the last hour and see several thing that it might be. Could somebody lead me to some kind of order I may try to fix this buggy. It was my wife's fathers and she is excited about havein it running again as he has passed away . Charger had to be repaired, but seems to charge as it should. Reading was 49.0 before charging for 5 hours. I'm a novice at this but have so mechanical abilities. DS with lever F/R