which charger would work to charge this battery?

This is not a battery you can charge directly, it would be fitted to a device (in my case a car dash cam) which in turn charges it. I guess it is a about 5V DC (from 12V car battery). I have also seen these used in Drones, sat navs etc... but all charge via the device not directly.

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Description

🔋 Power your smart life with precision and safety—never miss a moment!

PRECISION POWER FIT - Designed with exact connector polarity and size to avoid costly device damage—no guesswork, just perfect compatibility.
LIGHTWEIGHT COMPACT - At just 2.8g and ultra-slim 17.5x31x4.3mm, it fits seamlessly into your sleek tech without bulk or weight.
RELIABLE LONG CYCLE LIFE - Engineered for durability with overcharge, over-discharge, and short circuit protection to keep your devices powered safely.
CERTIFIED SAFETY ASSURANCE - UN 38.3 and UL certified, ensuring industry-leading safety standards for peace of mind in every charge.
VERSATILE SMART TECH POWER - Ideal for dashcams, Bluetooth speakers, smart home devices, and more—power your connected lifestyle effortlessly.

The EEMB Lithium Polymer Battery LP401730 is a compact, lightweight 3.7V 150mAh rechargeable power source featuring PCM protection for overcharge and short circuit safety. With exact connector polarity requirements, it ensures perfect device compatibility. Certified by UN 38.3 and UL, it offers reliable, long-lasting performance ideal for dashcams, smart home devices, and portable electronics.

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Package Dimensions L x W x H	11.1 x 6.1 x 1.9 centimetres
Package Weight	0.01 Kilograms
Product Dimensions L x W x H	17 x 32 x 4 millimetres
Item Weight	0.01 Kilograms
Brand	EEMB
Part number	LP401730
Size	1
Guaranteed software updates until	unknown

401730

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