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

Worked perfectly for my style is pen for my surface pro. Thank you.

There simple and straight forward. Plug in the charger, pop in the battery, and charge. They charge quickly. Not enough use yet to say how long they last. Everything came as described.

Works terrific

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.

Perfectly sized charger adding great value and functionality. The battery capacity has been solid, with a long battery life.

I didn't realize how hard it was to find AAAA batteries in the store. When I seen these and they were rechargeable, im like sure why not. So far so good. And the ease of charging is great!

Charger works as designed and seems durable.

This is a great product to have for nyone who has a styles pen that user AAAA batteries.

I have a stylus that calls for AAAA batteries. It's the only use I have for them, and the idea of buying single-use batteries for a single thing was off-putting. This works very nicely for keeping one on hand while the other is in use. I love how small the charger is, although it's a bit of a tight fit for the battery. The batteries themselves work well but don't last that long. Not an issue for me, but worth keeping in mind.

no era lo que esperaba

Needing a replacement battery for the Lenovo Yogabook 9i pen, i couldn't find in any stores i buy batteries. Most say, they're an online buy only. These AAAA rechargeable batteries (with awesome little portable charger) are great. No more having to search or keep packages in "junk-drawer" stock. They charge quickly and their life is great too. Very satisfied. Plus i'm guessing are at a fraction of the cost if i went online to buy a specific AAAA battery (Lenovo) for it's laptop pen. Good buy!!

I initially returned this item as not working and received a full refund. EBL offered me a free replacement and I realised that the problem was with the visibility of the LED display and that it probably had been working. The LED is set deep inside, and not on the surface as with most LED indicators, so that you can only see it from directly above the charger. The outlet I had used was underneath a cabinet making this impossible. I had to use my phone to see the LED! It is designed to charge AAAA and AA batteries, but you can easily charge AAA batteries too if you use a small nut or ball of aluminium foil to fill the gap and make contact (see picture) I did find, however, that it does not seem to charge the batteries as fully as a regular charger. When I put an EBL charged AA into a regular one it continued to add charge. Unlike most users I need a pair of AAAA batteries for my hearing aid controller!

I use this charger and two rechargeable batteries (AAAA) with my Pixel Slate Pen. I'm satisfied, no any problems. In one month of use I've already saved money, compared to buying usual batteries.