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 3.7V Lipo Battery 1100mAh 603449 Rechargeable JST 2.0mm,1-Pack

Product ID: 282474582

Details

Battery Capacity
1100
Battery Cell Composition
Lithium
Brand
EEMB
Number of Batteries
1 Lithium

⚡3.7V stable voltage

🔋1100mAh high capacity

🔌JST 2.0mm precision connector

¥3739

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Sold byAmazon JapanDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🔋 Stay charged, stay ahead — power your smart life effortlessly!

SEAMLESS COMPATIBILITY - Precision JST 2.0mm connector fits perfectly with a wide range of IoT and smart home devices.
LONG LASTING ENERGY BOOST - 1100mAh capacity delivers extended runtime, minimizing downtime and maximizing productivity.
ECO FRIENDLY RECHARGEABILITY - Supports 800+ recharge cycles, reducing waste while keeping your devices powered longer.
BUILT FOR SAFETY DURABILITY - UL and IEC certified with overcharge, over-discharge, and short circuit protection for peace of mind.
POWER YOUR DEVICES WITH CONFIDENCE - Reliable 3.7V output ensures consistent performance across your smart gadgets.

The EEMB 3.7V 1100mAh LiPo battery features a compact 34.5x51x6.3mm design with a reliable JST 2.0mm connector. UL and IEC certified, it offers safe, leak-proof performance with over 800 recharge cycles, ideal for Bluetooth speakers, smart home devices, and IoT gadgets. Lightweight at 22g, it balances power and portability for the modern professional’s tech arsenal.

Specifications

ASIN	B08FD39Y5R
Amperage	22 A
Antenna Location	Alarm, Arduino Board, Bluetooth speaker, Camera, GPS, LED Light, Radio, Remote controller, Wireless headphones, Wireless keyboard, micro controller
Battery Capacity	1100 milliamp_hours
Battery Cell Type	Lithium Polymer
Battery Weight	22 g
Best Sellers Rank	#90,119 in Health & Household ( See Top 100 in Health & Household ) #31 in 3.7V Batteries
Brand	EEMB
Customer Reviews	4.4 4.4 out of 5 stars (1,295)
Item Dimensions	1.36 x 2.01 x 0.25 inches
Item Weight	0.03 kg
Manufacturer	Hubei Zhongju (EEMB) Energy Power Co., Ltd
Model Name	LP603449 with JST PHR 2.0mm Connector
Model Number	LP603449-PCM
Number of Batteries	1 Lithium Polymer batteries required.
Reusability	Rechargeable
Unit Count	1 Count
Voltage	3.7 volts

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¥3739

Duties & taxes included

In stock

Sold byAmazon JapanDelivered 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 Japan.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

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