EEMB Lithium Polymer battery 3.7V 1800mAh 963450 Lipo Rechargeable Battery Pack with wire JST Connector for Dashcam and Bluetooth Speaker-confirm device & connector polarity before purchase

This works great and boosted the longevity of the talk time. I had to remove the connector and use a 10k thermoresistor but this is working and charging effectively. So a good replacement

Neat little lipo, comes with a little protection board wired in. Keeps a small meshtastic node going all day. Should be fine for any little low-current project that might not fit an 18650 in the box.

Whenever I have bought lipo batteries from this manufacturer EEMB the polarity of female connector attached to the battery has always been the correct way for fitting it to the male connector on my lipo charger BUT I ALWAYS check it before connecting them together . Just as well I am into this habit because on this pack of 4 1800mAh lipos as the connections had been reversed on the battery ! Therefore I could neither charge them nor use them on the circuit I had previously used 850mAh lipos on and needed the extra mAhs to make the circuit last for longer as it is a red/green/blue changing led solar charging light .So I have wasted a lot of money due to lack of Inspection at the factory .Not a happy bunny ! !UPDATE - VERY IMPORTANT ! !Since I posted this review I have been contacted both by the Seller & by EEMB explaining to me that there is NO industrie standard for polarity of battery to connector .I have been offered a full refund without returning the batteries .I now realise that our reviews ARE read by Sellers and Manufacturers .Please Note I have altered my * rating from 1 to 3 because the Seller/Manufacturer contacted me with their explanation as to why the polarity was different to other EEMB connectors .Just remember to always check the polarity of the battery and the piece of equipment before connecting the battery !I have taken up their offer of a full refund !One Happy Bunny ! !

Thank you, Amazon and EEMB The battery Fits my project and works well.

Whilst not exactly the same dimensions as the old battery it just squeezed in the speaker case gave my JVC SP-AD50-B bluetooth speaker a new lease of life!

The polarity of this battery is not the conventional (most common) but for those looking for this special requirements, this is perfect. SparkFun does nor ship batteries to the UK so getting the correct polarity can be difficult. Great battery quickly delivered.

Checked to see if it was the right one and put it in my radio and it blow my radio up left you a message not even a reply from you 🤬😡🤬😡

I'm not sure what can be said about a lipo battery.The quality feels fine, it comes well packaged and charged no issues. I can't say much about battery life because I put it in a home made wifi light switch for my kids, but it lasts several days with the D1 Mini microcontroller.