EARIN | DIY battery replacement

EARIN’s capsule battery

My EARIN’s capsule battery is almost dead. When I enclose earphones in the capsule, an indication lump of the capsule never turns on. So I decided to replace the dead battery.

When I twist to the capsule, it opened like the picture below.

EARIN battery

ICR17280 is model number of the battery.

[spec of ICR17280]
Place of Origin: Guangdong, China (Mainland)
Brand Name: Topway
Model Number: TW-ICR17280
Nominal Capacity: 600mah
Nominal Voltage: 3.7v
Weight:18g
Battery type:lithium-ion
Cycle life:More than 500 times
Size:17mm*28mm

I searched the battery on Google, but I couldn’t find any shop to get one.

I didn’t have any other choice, so I searched a substitute product. 28mm length is little bit uncommon.

I finally found a product which is the same size as ICR17280.

富士通 カメラ用リチウム電池3V 1個パック CR2C(B)N
  • 富士通
  • 価格   ¥ 358 prime
  • 販売者 Amazon.co.jp

FUJITSU CR2C

CR2 battery

[FUJITSU CR2C battery]

  • SIZE: CR2
  • VOLTAGE: 3.0V
  • CHEMICAL: Lithium

The voltage of ICR17280 is 3.7V and that of CR2C is 3.0V. CR2C’s voltage is lower than ICR17280. It’s no problem!

I bought a CR2C battery from Amazon. It costed just $3 (330yen). Good price!

Amazon's parcel

A parcel from Amazon was so big and a battery was so small.

replacement of battery

I replaced the dead battery as CR2C battery like below.

after replacement

After replacement, I enclose earphones in the capsule and the indication lump of the capsule turned on.

EARIN repaired

My EARIN earphones came back! It costed only $3 (330yen).

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