The DJI battery uses resistive discharge process ... that is why its slow and also that heat is generated.
If you want to use a different method then various 3rd party items are available such as Telsin adaptor which takes the discharge energy and provides USB power to charge mobile / power an LED lamp ... etc.
As regards LiPo itself ... there are n differences between the DJI 'OEM' cells and any other LiPo High Voltage cells. DJI in fact do not manufacture any batterys - they are contracted items from at least 3 different factories.
If you want to use a different method then various 3rd party items are available such as Telsin adaptor which takes the discharge energy and provides USB power to charge mobile / power an LED lamp ... etc.
As regards LiPo itself ... there are n differences between the DJI 'OEM' cells and any other LiPo High Voltage cells. DJI in fact do not manufacture any batterys - they are contracted items from at least 3 different factories.