1-4 of 4 Answers
6 AA batteries for back up power. The ER310 comes with a lithium rechargeable battery.
Sorry, there was a problem. Please try again later.It uses 6 AA batteries which are not required for it to operate because other power sources include a solar panel, a hand crank, and a USB charge cord that can charge up the rechargeable battery supply.
Sorry, there was a problem. Please try again later.It requires 6 AA batteries.
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