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E-Rex 3.7V 2900MAH Lithium ion battery

In stock
Chemistry - Lithium Ion
Nominal Voltage - 3.7V
Full Charge Voltage - 4.2V
Battery Capacity - 2900MAh
Maximum Discharge Current - 2A
Maximum Charging Current - 1A
Battery Enclosure Material - Plastic Shrink Paper
Warranty* - 1 Year Standard
Suitable Application - Toys, Speaker, IoT, & Industrial Applications
₹329.00 ₹520.00

(Including GST and Transportation)

For bulk and B2B enquiries kindly mail us at Sales@e-rexindia.com

"The BoltBlaster: Zap Your Power Worries Away!"


Meet the E-Rex 3.7V 2900mAh Rechargeable Li-ion Battery, your trusted power source for a multitude of electronic applications. Crafted with advanced lithium-ion technology, this battery offers substantial capacity and reliable rechargeability.





Versatile Power for Various Applications:

  • The E-Rex battery is a versatile powerhouse designed to excel in a wide range of applications, including:
    • Electronics
    • Toys
    • Lighting
    • Equipment
    • Power Banks
    • Bluetooth Speakers
    • IoT (Internet of Things)
    • Industrial Applications

Features and Specifications:

  • JST XH 2.54 Female Connector: Comes equipped with a convenient JST XH 2.54 female connector for straightforward integration into your devices.
  • Shrink Paper Packing: Packaged securely in shrink paper to ensure safe delivery and handling.






Unleash Your Creativity:

  • The E-Rex battery empowers your electronic world, providing energy for your devices and gadgets. Whether it's illuminating your space or amplifying your Bluetooth speaker, this battery is up for the task.

High Capacity, Low Weight:

  • With a substantial 2900mAh capacity packed into a feather-light 1.8 oz package, the E-Rex battery offers extended power without weighing you down. It's like carrying a pocket-sized energy boost!





Experience the E-Rex Rechargeable Li-ion Battery, offering impressive capacity and versatile power solutions for a wide array of electronic applications. Upgrade your devices and enjoy uninterrupted performance with this reliable and lightweight energy source. Order now and embark on a journey of limitless possibilities! 🌟🔌🔋



Package Includes : 

1* 3.7V 2900mAh Lithium-Ion Battery

1 Cell Chemistry  NMC - Lithium Ion
2 Pack Configurations 1S 1P
3 Nominal Voltage 3.7V
4 Nominal Capacity  2900MAH
5 Cell Dimensions 18650
6 Total Energy (W) 10.70W
7 Efficiency 95%
8 Usable Capacity 100%
9 DOD % >91%
10 Warranty 1 YEAR
11 Life Cycles >800 
12 Self Discharge rate < 3% /Month
13 Charging Mode  CC/CV
14 Charging Current (MAX) 0.5A
15 Charging Voltage (MAX) 4.2V
16 Discharge Cut of Voltage 3.2V
17 Max. Continues Discharge current 2A
18 Peak Discharge Current 3A
19 Charging  0 ~35C
20 Discharge Discharge -20 ~ 40C
21 Storage -5 ~ 25C
22 BMS High T emperature Protection 70C
23 BMS Low Temperature Protection -10C
24 Dimensions ( L*W*H) MM 20*20*70
25 Weight (Kg) 50 G
26 Discharging Connector JST XH 2.54 Female Pin
27 Charging Connector JST XH 2.54 Female Pin
28 Type Of Enclosure/ Color Plastic Shrink Paper / Blue
29 Communication Ports -
30 Enclosure Protections -


1 Year Warranty

This item is covered with a standard warranty of  1 Year from the time of Purchase against manufacturing defects only. This warranty is given for the benefit of E-Rex customers from any kind of manufacturing defects.  Reimbursement or replacement will be done against manufacturing defects.



What voids warranty:

If the product is subject to misuse, tampering, static discharge, accident, water or fire damage, use of chemicals & soldered or altered in any way.

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