2-Pack 4V Li-ion Battery for Milwaukee Headlamp&Flashlight Red Lithium 3.0 Battery 3200mAh USB Fast Charger - 20% Longer Runtime & 3X Faster Charge Compatible with Milwaukee 48-11-2131

The batteries work just as well as the more expensive milwaukee brand

It was impossible to find out what model # battery would fit our ancient 3522-20 Laser (circa 2022) which had a missing battery. I couldn't find reference to this laser on the internet or ref to this battery being used with a laser. So I took a chance and ordered this 48-11-2131. I am pleased to report that it is the proper battery!! YaY . Seems to be working now. Will try to update with battery longevity info after some time.

Very handy to have on hand

Exactly fit haven't had a chance to use it to find out how long charge it has

These batteries fit my Milwaukee headlamp perfectly and seem to last a bit longer than the originals (probably also bc the replaced battery was old). USB charging is convenient, and the price for two is hard to beat.

Purchased for my Milwaukee headlamp. Worked for maybe 6 months with near everyday use. Might consider it to be worth the price if going with the two pack deal, but I got much more life out of the Milwaukee oem battery. Going back to those for now

definitely saved my lamp was already for throw it in the trash it was useful again I recommend it,

Excellent

Súper recomendado las baterías duran muy bien

Doesn't work at all with my Milwaukee head lamp