The back up battery is a 3.7V 1000mAh lithium polymer rechargeable battery. There is no need to replace this battery as power failures do not happen often. If you do need to replace the battery in the future you can purchase any 3.7V lithium polymer rechargeable battery locally with the similar dimensions that fits in the case.
Battery Specifications:
<ul>
<li>Model: 523450</li>
<li>Type: Li-polymer battery</li>
<li>Capacity: 1000mAh</li>
<li>Charging Voltage: 4.2V</li>
<li>Rated Voltage: 3.7V</li>
<li>Rechargeable: YES</li>
<li>Working Temperature: -20°~60°</li>
<li>Net Weight: About 18g/0.63oz</li>
<li>Size(L*W*H): About 50x34x5.2mm/1.97x1.34x0.20</li>
<li>Connector: PH2.0，Cable length: 10cm/3.9in</li>
</ul>
<img style="float:none;height: undefined;width: undefined" alt="undefined" src="https://cdn.livechat-static.com/api/file/kb/file/12185070/9a8c376c93-7968a630ab9a35553115.png">
Plug the battery into the power jack and adhere the battery to the case with a double-sided adhesive tape. See fig 1. and fig 2.
For steps on how to replace the back-up battery please check out the video tutorial below.&nbsp;
<iframe src="https://www.youtube.com/embed/PIiR0t4-4IM" height="undefined" width="undefined"></iframe>

Fig 1. Open the back panel with a flat head screw driver&nbsp;
<img style="float:none;height: undefined;width: undefined" alt="undefined" src="https://cdn.livechat-static.com/api/file/kb/file/12185070/ec450e0218-330e01c48b6d3b3f5d64.png">
Fig 2.
<ol>
<li>&nbsp;Disconnect the battery's connector</li>
<li>Peel off battery from panel</li>
<li>Stick new battery onto panel&nbsp;</li>
<li>Connect battery connector to panel</li>
<li>Snap display cover back in place</li>
<li>Back up battery replacement completed!</li>
</ol>
<img style="float:none;height: undefined;width: undefined" alt="undefined" src="https://cdn.livechat-static.com/api/file/kb/file/12185070/6fe5af2824-04c96fa538a15790813d.png">
&nbsp;&nbsp;

The back up battery is a  3.7V  1000mAh lithium polymer rechargeable battery. There is no need to replace this battery as power failures do not happen often. If you do need to replace the battery in the future you can purchase any 3.7V lithium polymer rechargeable battery locally with the similar dimensions that fits in the case.
Battery Specifications:
Model: 523450
Type: Li-polymer battery
Capacity: 1000mAh
Charging Voltage: 4.2V
Rated Voltage: 3.7V
Rechargeable: YES
Working Temperature: -20°~60°
Net Weight: About 18g/0.63oz
Size(L*W*H): About 50x34x5.2mm/1.97x1.34x0.20
Connector: PH2.0，Cable length: 10cm/3.9in
 
Plug the battery into the power jack and adhere the battery to the case with a double-sided adhesive tape.  See fig 1.  and fig 2.
For steps on how to replace the back-up battery please check out the video tutorial below. 
 

Fig 1.  Open the back panel with a flat head screw driver 
 
Fig 2.
 Disconnect the battery's connector
Peel off battery from  panel
Stick new battery onto panel 
Connect battery connector to panel
Snap display cover back in place
Back up battery replacement completed!
 
  

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