EBL Rechargeable AAAA Batteries 2 Counts 400mAh with Smart AAAA Battery Charger - High Capacity Ni-MH 1.2V 1200 Cycles for Surface Stylus Pen

Works very well, the batteries charges with good performance on the laptop pen.

These are 4as so not many things use this size so charger combo worked great

Very reasonable price for two rechargeable batteries for essentially the price of a regular AAAA battery. I bought this kit specifically for to use with my laptop stylus. It is very convenient that the charger is a USB item that allows you to charge it with your laptop. Have not used it enough to see how long a single battery will last on a full charge. Material seems to be good quality; and the fit and finish is excellent too. I'm currently very happy with this purchase and I would recommend this kit thus far in my experience with it.Also, it can charge rechargeable AA batteries (Ni-MH/Ni-CD)

I bought this to charge EBL AAAA batteries for a Surface Pro pen. I took a star off because the contacts aren't the right length for the AAAA battery. I almost broke it trying to make it fit as I thought it should fit. Then I noticed that the positive contact is corrugated. The battery fits if placed at an angle, and it does charge. I would much prefer that the battery snap down for a more positive connection to the contacts. Otherwise, the charger form factor is fine, very portable. It would have been a plus if the maker had provided a carry case. I'll probably put it in a baggie with the second battery which I've charged but am not currently using. I would still buy this, but this would have been good to know up front. In the next edition I would suggest spring loading the negative contact so that it can slide back to accommodate AAA and AA batteries for a higher quality connection with all sizes.

This EBL Rechargeable AAAA battery set with charger is very convenient. I use AAAA batteries with a stylus, and used to swap them every month or so. I finally decided to bite the bullet and get a rechargeable set, and have never been happier with the performance.The USB charger is very easy to use - simply insert the battery and plug it into a spare charging port! The fact that there are 2 batteries means I always have a spare available and never have to wait for the stylus to recharge. It really does reduce the amount of batteries I have thrown out, so it's both convenient AND better for the environment!

Update: Seller sent me new batteries with a working charger. Great customer service and assistance. Updated review to reflect the help. Thank you!Old :Batteries were dead when they arrived. Charged them both up with the included charger, and there was no light or indicator that they were charging. Waited 12hours, and the light was green which I assumed meant it was fully charged. Replaced the battery in my surface pen, and it was still unresponsive. Both batteries seem to be DOA and wont hold a charge. Unfortunately I am out of the return window to return them.

Got this for a camera battery charger and it works perfect!

Came in very handy for my daughters art tablet stylus. She draws a lot and this allows her to keep drawing when she wants as opposed to waiting.