Battery Replacement

SARK-110 original battery model is PR-384160N or PL-403860; see the datasheet below. The basic specifications are the following:

    • Chemistry: Li-ion Polymer

    • Nominal Rated Voltage: 3.7V

    • Safe voltage range: 3 - 4.2V

    • Nominal Capacity: 940mAh

    • Dimensions: H=3.8mm W=41mm L=63mm

    • Connector: Molex 51021-0200 (pitch 1.25mm)

    • Operating Temperature: 0 ~45°C (Charging) / -10~60°C (Discharging)

There are some vendors of Li-Ion batteries offering similar batteries. These batteries are normally supplied without a connector, so it will require the original connector being cut off and re-joined to the new battery.

3.7V 1500mAh Li-Ion Polymer

This higher capacity battery is slightly thicker than the original one, but it fits inside the SARK-110 housing.

    • Model: 504050

    • size: H=5mm W=40mm L=50mm

    • voltage: 3.7 V

    • capacity: 1500mAh, 2C discharge

http://www.ebay.com/itm/3-7V-1500mAh-Li-Polymer-Lipo-ion-Battery-For-mobile-phone-GPS-DVD-TABLET-504050-/262496320924?hash=item3d1dfffd9c:g:4QYAAOSw-4BXbQ5H

http://www.ebay.com/itm/3-7V-1500mAh-Lipo-Polymer-li-ion-Battery-504050-for-cell-phone-Camera-GPS-PAD-PC-/111861099475

3.7V 1200mAh Li-Ion Polymer

This higher capacity battery offered by Adafruit is slightly thicker than the original one, but it fits inside the SARK-110 housing.

    • Model: LP-503062

    • size: H=5mm W=34mm L=62mm

    • voltage: 3.7 V

    • capacity: 1300mAh

Note that the provided connector is not compatible; also check shipping restrictions

https://www.adafruit.com/product/258

https://www.amazon.com/Battery-Packs-Lithium-Polymer-1200mAh/dp/B00J2QET64

3.7V 1000mAh Li-Ion Polymer with JST 1.25mm Plug

This one includes the JST connector.

    • Model: LP-503450

    • size: H=5mm W=34mm L=50mm

    • voltage: 3.7 V

    • capacity: 1000mAh

3.7v 503450 1000mAh Lipo Li Polymer Rechargeable Battery JST 2pin 1.25mm Plug | eBay