This is not recommended if you plan to adapt another brand of lithium battery to the flashlight. This model works as low as six volts, and therefore will not protect the cells from being over discharged. That being said, you can actually run this device off of four 1.5v batteries in series. When the voltage drops to five volts, the light beam gets visually dimmer. From 6 to 20 volts, no extra brightness occurs. I assume there is an internal buck converter that drops the voltage of the normal 20v lithium battery pack.
Verified purchase: Yes | Condition: New
If you already have any of the HART 20V line, then your battery works with this. It is an all-plastic flashlight, but since I already have 10 batteries for the HART system, this is great to have and puts out a lot of lumen for a little light.
Verified purchase: Yes | Condition: Pre-owned
Great all-round work light , sturdy, multi. purpose light with directional beam!!
Verified purchase: Yes | Condition: New
We use our flashlight a lot. We like the adjustable focus, the brightness and the long lasting battery. Great price too!
Verified purchase: Yes | Condition: New
Very bright, Awesome flash light, Bought it on Ebay, $23.00 less than what walmart sells it for,, Well worth the money I spent, Recommend this flash light to 3 friends all 3 bought this same light.
Verified purchase: Yes | Condition: New
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