EEMB Lithium Polymer battery 3.7V 820mAh 653042 Lipo Rechargeable Battery Pack with wire JST Connector-confirm device & connector polarity before purchase

I bought this 3.7V 820mAh LiPo battery to fit into a 3D printed Meshtastic case. The size was just right and it slotted in neatly without any issues. Fortunately, the polarity on the connector was correct for my board, so I was able to plug it in without any modifications. That said, it is always important to double-check the polarity before connecting, as different boards and connectors are not always wired the same way. Getting it wrong could easily damage your hardware. Performance so far has been solid, and it holds a decent charge for the low-power use case. A good battery for compact LoRa projects, as long as you take the usual precautions.

Nice batteries read the correct mah

Bought to replace defective rechargeable battery for my Tyrepal system. Easy to replace though had to change connection plug which was larger than original. All charged and working as designed and was great value and much cheaper than having to buy a whole new system due to a failed battery.

Battery didn’t last very long

I heeded the warning to check the polarity. :-) I was not surprised to find the polarity was wrong, and was easily able to reverse the wires with a small precision screwdriver, after which it works fine. Since I didn't trust the module I was powering to have the right polarity in the first place, I'm not blaming the batteries for the small extra step required.

Exactly as described, used to replace a battery in a wireless aftermarket games controller for Nintendo Switch/PC. Functions fine and seems to hold charge well. Time will tell on longevity, but seems a well packaged quality battery.

Done the job

Used this battery as an upgrade for my Logitech G Pro wireless mouse, obviously this is not the same size as it's original 240mah battery but after some shell modifications and soldering to the original connector it works like a dream. Substantial weight increase, but in exchange it's gone from 64hrs of battery life in ideal circumstances to over 200 - at my going rate of usage I won't need to charge it more than 3 times per year! No issues so far to speak of, some people seem to have issues with the polarity, which I assume is on the connector end as the cables are the correct colours for standard +/- polarity at the battery terminals. Check your original cables before installing.

Baught to replace dead battery in a laser telemeter Bosch GLM80. Doesn't work. The GLM80 works fine when powered by lab power supply.

Son buenas, para mí son un poco grandes y he tenido que modificar la conexión

They are off by a couple mm's so be careful ordering these. but for the rest they work

This battery does well! I did have a project of intalling battery to a bluetooth divice which didn't have a internl battery, so I inproviced this battery in conjuction with a module to recharge it and it worked perfectly, now my device doesn't need to be connected to electrcity all the time I just change the battery and I'm done for atleast 6 hours of operación wirelessly. Pretty good!

Questa batteria LiPo si è rivelata di ottima qualità. Offre una capacità di carica che corrisponde a quanto dichiarato e garantisce un’erogazione di energia perfetta per i miei dispositivi. La batteria è leggera e compatta, quindi ottima per vari progetti elettronici senza aggiungere peso o ingombro. Ideale per chi cerca una batteria efficiente e duratura.