Kastar Rechargeable Battery Compatible with Logitech Harmony 880 890 720 785 885 895 One MX-880 R-IG7 F12440023 815-000037 190304-2000 190304-0000 866165 866145 866207 and Monster AVL300 MCC AV100

It's too bad Logitech stopped making home theater remotes. Means at some point, I won't be able to buy the "One" remote any longer. Luckily, I have a few spare ones in a drawer that I bought used. We have 4 of them in the house for my wife and I to use (each end of the couch, each side of the bed). Luckily, the software to program them still works... unless I buy something new that wasn't in the database previously... Anyway, the battery life on a couple of ours was getting short, so I ordered 4 of these to just replace all of them at once. They seem to work fine all day without issue for us.

Bought to replace the battery in my Logitech remote. Bought the remote used, and like many others, the existing battery was all kinds of swollen. Was finally able to get it out and replaced it with this one. Works great, no complaints! A+ 😁👍

The specs are the same as the OEM battery. It fits easily into my Harmony One remote control. As of today, I don’t have enough experience to determine the battery life, either hours of use or number of recharges. The OEM battery lasted since 2013 and is just noticeably losing capacity. This replacement battery will have to work hard to exceed the original battery, but as long as it continues to have acceptable capacity, I won’t amend this review.

Bought to replace a Harmony One swollen battery, which seems to be a common issue. I've used this battery for a month now and so far no issues, in fact is seems to last longer than the previous battery (Which is probably due to a defective battery). 10/22/13 Update to my review, I felt compelled to write a follow up since I've seen so many negative reviews. I've used this battery for almost 3 years now with no issues and am really surprised on how many people had defective batteries. Maybe I've been lucky but I've noticed I can't go more than a couple of days on a single Charge (Which happens due to aging battery) but that's been OK since we put the remote back on the charger by the end of the day. I haven't had a problem with the stock charger charging the battery nor have I had the pleasure of this battery failing.

Didn't work at all, returned for refund

The battery is correct, but it is not the white model pictured. This is an issue because the blue one sent is the kind that I had to replace and is known to swell. So deceptive picture, yet it will work, until it swells again...

My Harmony One remotes would die after a few hours off the charger. I found the factory batteries swelled and difficult to remove so replaced them with these. The new batteries arrived on-time and have worked well for several weeks. The remotes operate as expected even after several days off the charger. At time of purchase I was needlessly concerned about battery quality at such a low price. These are doing just fine.

This battery fit my remote. It now has an operating duration as new.