I haven't noticed any different battery during my past weeks of SX modchip ( I rarely play handheld past 3 hrs lol ).Have you noticed any negative impact on the battery life since you have the SX core installed?
However the boot on modchip ( sometime Fail ).
- Sometime I need to re-plug the my SD card in few time to make it recognize the boot.dat.
- Sometime It's just stuck at SX logo ( just force shutdown and reboot then it's boot just fine ).
- Restart option and holding volume + in CFW ( won't restart and boot to SX bootloader ), weird lol, my friend V1 patched got his switch modchip today reboot to SX bootloader just fine.
- Don't use ChoiDujourNX on your mariko devices for now ( it may brick your console ).