Voltage: 3.7volt; Capacity: 2500mAh；Maximum Charge Voltage/Current: 4.25V/1250mAh; Material: Lithium Polymer.
See on Amazon

I recently purchased the 3.7V 2500mAh Lithium Polymer ion Battery Pack, and I must say, it has been a game-changer for my gadget collection! The battery’s capacity of 2500mAh ensures that my devices stay powered for extended periods, making it perfect for my MP3 player, Bluetooth headset, GPS device, and smartwatch.

The battery’s size, measuring approximately 5mm x 55mm x 74mm, is compact enough to fit comfortably in most devices without adding unnecessary bulk. However, it’s essential to note that the PH 2.0mm connector might not be universal, so ensure it matches your device before making a purchase.

I experienced an issue with the polarity of the connector not matching my device initially. Fortunately, I rectified this quickly, and now the battery works flawlessly. It’s crucial to double-check this aspect before using the battery to avoid potential damage to your devices.

One thing to note is that this battery is a non-power battery and should not be used for high-current devices such as drones, RC helicopters, or power tools. It’s designed primarily for low-power devices like MP3/MP4 players, GPS units, and Bluetooth speakers.

Overall, I am satisfied with this purchase. The battery performs well, charges quickly, and has a long lifespan. If you’re in the market for a reliable rechargeable battery for your low-power devices, I recommend giving this one a try!

  • WARNING: The batteries connectors type are all JST PH2.0MM . THE CONNECTORS ARE NOT UNIVERSAL! ! ! Please make sure that the CONNECTOR TYPE, POLARITY , and BATTERY SIZE match your device before purchasing. If the POLARITY of the connector DOES NOT MATCH that of your device, it will DAMAGE the device or the new battery.
  • Voltage: 3.7volt; Capacity: 2500mAhMaximum Charge Voltage/Current: 4.25V/1250mAh; Material: Lithium Polymer.
  • Connector Type: PH 2.0mmSize: 5mmx55mmx74mm / 0.2″ x 2.17″ x 2.91″ (T*W*L); Cable Length: 5cm / 2″; Net Weight: 44g.
  • NOTE: The 3.7V 2500mAh 505573 Lithium Battery is NON-POWER BATTERY! ! ! It can not be used for power device that require high current such as UAV, mini RC Helicopter, Model aircraft , Electric toys, Power tools and other.
  • ApplicationSuitable for MP3/MP4, Bluetooth wireless headset,GPS, baby monitor, game boy, skybell ,smart watch,monitoring units, POS machine, dashcam, mobile power, Bluetooth speaker, VR glasses, beauty devices, pet tracker,ring video doorbell etc.

    • As an Amazon Affiliate, I earn from qualifying purchases.