Using a 42V charger for a 48V battery is not recommended due to significant risks associated with mismatched charging voltage. Since a 42V charger falls short of the voltage required for a 48V battery, it can lead to incomplete charging, reduced performance, and even potential damage over time. Lithium-ion batteries, in particular, demand precise charging to ensure safety and optimal performance. Undercharging not only shortens the battery’s runtime but may also impact its longevity. For safety, efficiency, and to avoid voiding warranties, it’s essential to match your charger to your battery’s exact voltage specifications.
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