==Fuel gauge - LED Indicator==
<span style="color:red;">Operation of Discharging:</span>
{| class="wikitable collapsible collapsed"
! Capacity C (%) !! D1 !! D2 !! D3 !! D4
|}
<span style="color:red;">Operation of charging:</span>
{| class="wikitable collapsible collapsed"
! Capacity C (%) !! D1 !! D2 !! D3 !! D4
| C<25% || Flashing || OFF || OFF || OFF
|}
==Pins and GPIO used==
{| class="wikitable collapsible collapsed"