The Dual 9V Battery Charger is capable of conveniently charging two batteries simultaneously to keep your TENS unit powered. It also features a low-profile design that fits perfectly inside your TENS unit. Charges two 9V rechargeable batteries simultaneously Low profile design fits inside TENS unit perfectly Plugs into AC electronic outlet for power Features a red LED light that indicates when the batteries are charging Trickle charger; takes around 12 hours to fully charge battery Sold individually
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