Cameron Sino Rechargeble Battery for Symbol MC3090 (4400mAh)

all right today I looked into replacing double-a batteries with lithium-ion battery pack in this case I'm using a dynamo Electra tag handheld tagger that runs off for double-a batteries in this case I was using some almost barely-there rechargeable batteries these are about almost two these two here about three years old and these Duracell wands are almost 5 years old and barely have any life left into them now for Doughboy batteries means they need input of about 6 volts most items that run on batteries will run on a range of voltages ranging from 4 volts up to upwards of 6 6 point 2 volts since these batteries tend to be dead at around 20 volts so there's decent range of voltages you can deal with that means your standard lithium ion battery 3.7 volts will actually run this device pretty well now this one's a four double A batteries quickly examining it and I see there's actually a DC