[NSRCA-discussion] TP1010C upgrade to 2.3A

[Ed Alt]

I see that Thunder Power has this new procedure when upgrading firmware, where you must either place a 10 to 15 ohm 5W resistor in series with the + power lead, or use a 9V FC-1 battery, otherwise void the warranty.  It's not clear to me what is special about a FC-1 battery.  From outward appearances, it looks like any other 9V dry cell, but who knows?  It's apparent that they want to limit the current and voltage during programming by using one of these new methods.
 
Anyone know what the deal is here?
 
Thanks
Ed
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