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What size are the motor and controller on a 42 volt cart? What size lithuim battery will work?
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Look on the controller for a label with any details on compatible voltage ranges, for example, many controllers list a range, such as 36-48V, which indicates it may be flexible enough to handle a higher voltage with minor adjustments. The motor should also have a label or plate with its rated voltage. Typically, motors rated for 42V can handle an increase to 48V, but you should verify it to avoid wear or potential overheating.
Since a 42V lithium battery is quite rare, your best bet would likely be a single 48V lithium battery rated at at least 105Ah to provide reliable power. Upgrading to 48V offers some advantages in efficiency and power delivery, but it does require a few additional steps. Additionally, you may need to look into upgrading your solenoid to a 48V as the solenoid controls the power from the battery to the motor and needs to match the upgraded voltage. The same goes for the charging setup, you’ll need a 48V lithium compatible charger to maintain the battery properly. Lastly, if your cart has any auxiliary accessories (like lights or a sound system), consider a DC/DC converter to step down from 48V to 12V, which will help avoid overloading smaller components designed for lower voltages.
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