The box clearly states non rechargeable, are these actually rechargeable?!?!

I didn’t pay attention to my box but yes they are rechargeable.

is the polarity of the connector reversed?

The polarity of the connector battery side is as you see it. Red(+) Black(-).... However... I have seen instances were the polarity of the pins on the equipment side has been reversed. A pain. You will have to verify the circuit diagram that you are connecting the battery to.

Can it be used on 3 wire equipment? how to connect if yes? i am trying to use it on logitech mx master mouse.

3 wire Lipo's have balancing tech/ability. These two wire batteries are not setup for that.

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EEMB 4PACK Lipo Battery 3.7V 1100mAh 603449 Rechargeable Wire JST 2.0mm

Product ID: 313501981

Details

Battery Capacity
1100
Battery Cell Composition
Lithium
Brand
EEMB
Number of Batteries
4 Lithium
Recommended Uses For Product
GPS

⚡1100mAh long-lasting capacity

🔋3.7V high-voltage power

🔌JST 2.0mm precision connector

€ 57.74

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Description

🔋 Power up your tech game — don’t get left in the low-battery zone!

SAFETY FIRST ALWAYS - Built-in protections against overcharge, over-discharge, overcurrent, and short circuits keep your devices secure.
PLUG PLAY PRECISION - JST 2.0mm connector guarantees seamless compatibility and easy installation.
CERTIFIED QUALITY YOU CAN TRUST - UL, IEC 62133-2, and UN38.3 certifications mean safe shipping and peace of mind.
POWER YOUR DEVICES WITH CONFIDENCE - Reliable 3.7V voltage ensures consistent performance across your smart gadgets.
STAY UNSTOPPABLE WITH 1100 M AH CAPACITY - Extended battery life supports 800+ recharge cycles for long-term use without compromise.

The EEMB 4PACK Lipo Battery offers a robust 3.7V and 1100mAh capacity in a compact 34.5 x 51 x 6.3mm form factor. Designed with a JST 2.0mm connector, it supports over 800 recharge cycles and includes comprehensive safety protections. UL and international certifications ensure safe, reliable performance for Bluetooth speakers, smart home devices, GPS, and more — perfect for professionals who demand dependable power on the go.

Specifications

ASIN	B08VRYS8FT
Amperage	4 A
Antenna Location	GPS
Battery Capacity	1100 milliamp_hours
Battery Cell Type	Lithium Polymer
Battery Weight	22 g
Best Sellers Rank	#67,845 in Toys & Games ( See Top 100 in Toys & Games ) #44 in 3.
Brand	EEMB
Customer Reviews	4.2 4.2 out of 5 stars (125)
Item Dimensions	1.36 x 2.01 x 0.25 inches
Item Weight	0.02 kg
Manufacturer	Hubei Zhongju (EEMB) Energy Power Co., Ltd
Model Name	92-JM4C-EHLI
Model Number	LP603449-PCM
Number of Batteries	4 Lithium Polymer batteries required. (included)
Reusability	Rechargeable
Unit Count	4 Count
Voltage	3.7 volts

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€ 57.74

Duties & taxes included

In stock

Sold byAmazon SlovakiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Slovakia.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

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