ExpertPower® 12v 3000mAh NiMh Battery for Panasonic EY9106 EY9200 EY9201 EY3790 EY6405

My original batteries would not hold a charge for very long. I did a simple test with the original batteries by fully charging each and holding the drill's trigger while set to HIGH. One battery lasted only 1 minute 25 seconds before kicking down to a slow speed which lasted an additional 30 seconds before running out of power. The second battery was only slightly better at 2 minutes 10 seconds before dropping to low and running out of power 40 seconds later. The ExpertPower battery locked into the drill very securely, just like the OEM batteries. It was a little tight fitting into the charger but that's much better then being loose. In time I am sure it will snap in / out perfectly.After being fully charged I held the trigger down while the drill was set to HIGH. 5 minutes and 30 seconds later I gave up. I don't know how long it would have gone but over 5 minutes, constant, with full torque is good enough for me. Factor in the inexpensive price and quick shipping and you can not go wrong with these replacement batteries!

While I would like to comment on this product as to longevity and value, only time will tell. I bought the drill at least 10 years ago. The original batteries lasted about five years ago. I bought three more five years ago. Only one of the replacement batteries is still good. The other two just gave it up. Hopefully this new one will last as long as the holdout.

One star off for the high price...worked as expected on arrival.

Seems to be a good fit. Happy to find it to replace the old one.

Works in my 12v panasonic drill just fine

The batteries are a perfect fit in the drill and did not require any trimming the plastic to make them fit. They are compatible with the charger and they charged without error. They added additional life for an old and reliable drill.

This is a product that has lived up to its description. It has more power and lasts longer, per charge, than the original Panasonic battery.Recommend purchasing of this item

I have had these batteries for a short period of time but so far they have performed as would be expected. The transaction in buying them was all that could be expected.