Review on ANVOW Smart AAAA Battery Charger with 2 Rechargeable AAAA Batteries - Ni-MH 1.2V 400mAh 1200 Cycles for Surface Pen Active Stylus by Kurt Virden

My bamboo pen is draining at an alarming rate - we're talking 2-3 batteries a week. I use it extensively in medical school and am concerned about the batteries I am sending to the landfill. I ordered this one hoping it would keep me from throwing away so many batteries. I've used every battery and so far so good. The charger is portable enough to carry in my backpack and plugged into the side of my laptop to charge one battery while my pen sucks the life out of another. I get normal battery life from them - maybe even a little longer than the main Amazon batteries I've used. Can't comment on longevity or longevity as I've only had it a week, but I'll update my review if anything changes. So far I am very happy with this purchase. It fully meets my needs. Update: I've been using it for a few months now and am just as happy with it as I was when it first came out.