Polymer battery 450 mah


(9 customer reviews)

Product Description


Polymer battery 450 mah 3.7 V 503030 smart home MP3 speakers Li-ion battery for dvr,GPS,mp3,mp4,smart watch,speaker LED Light




100% Brand new !

Premium 3.7V, 450mAh 503030 rechargeable Li-Po battery.

Miniature design, light weight and portable.

Provides excellent continuous power sources to your device, features high energy density and extra long lifespan.
Built-in intelligent protection PCB module, effectively prevents over charge, over discharge, over current and short circuit.

Ideal DIY battery or replacement cell for MP3, MP4, MP5, GPS, smart watch, game player, power bank, detector, alarm, alarm clock, humidifier, fingerprint lock, voice recorder, Bluetooth mice, headset, speaker, E-book, LED light, pos machine, interphone, driving recorder, portable DVD, radio, MID, PDA, PSP, electric toy, cosmetic & massage instrument, medical equipment and other devices with the same battery size and capacity.


Model: 503030

Type: Lithium battery

Capacity: 450mAh

Rechargeable: YES
Charging Voltage: 4.2V
Rated Voltage: 3.7V

Working Temperature: -20°~50°

Dimensions(L*W*H): About 30x30x5mm/1.18×1.18×0.2″



1. Please allow tiny size deviations due to human measurement.

2. Make sure your device’s battery space before you bid, we prefer you purchase a smaller size battery.

3. Please keep your kids out of reach of the battery in case they swallow.

4. When the battery is not in use, it should be removed from the device.

5. The red and black lines should not be connected to avoid short circuit after battery is charged.


Package Included

1/2/4 x Batteries








Model Number

503030 Lithium battery



Nominal Capacity


Set Type

Batteries Only


Bundle 1

Replacement Battery


Battery Number






Rated Voltage



About 30x30x5mm/1.18×1.18×0.2"


3.7V Lithium battery

  1. 5 out of 5

    The second time does not reach. Money back.

  2. 5 out of 5

    Dimensions correspond. Delivery is fast, to the door. I will replace the old battery-I will check how it works.

  3. 5 out of 5

    The battery is working, bought for the DVR, it has been working for 2 weeks, there are no problems!

  4. 5 out of 5

    It ‘S for a month, the battery is charged to 3,8В, working in the headset, no problem. Recommend!

  5. 5 out of 5

    Good battery

  6. 5 out of 5

    I ordered 20.11.2019, received 22.01.2019, which of course pleases, because I ordered a similar battery from another store 29.9.2019 and it still does not, sellers themselves prolong the protection.

  7. 5 out of 5

    Great!! I recommend

  8. 5 out of 5

    To St. Petersburg exactly a month. Thank you to the store.

  9. 5 out of 5

    Got, if not a slave then I will sign off additionally.

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