4C is a neutral white tint and 1A is a cool white tint.
As for you wanting a flashlight with built in charging, forget about it. I wouldn’t trust a built in charging circuit when using lithium cells. Just get a good battery charger and good batteries. Anything with “Fire” in it is unsafe junk that can go boom and burn your house down. Not to mention destroy your lungs if vented.
I’ll make this easy for you. Richard (RMM on BLF) is a USA based seller from Washington state. He has great prices and all of his batteries are the good kind. He doesn’t sell junk and has great service. His orders are packaged very well. His shipping is around $5 for USPS 2 day priority
Convoy C8 Flashlight - XM-L2 U2 1A - Newest Version $17.99
A good charger that is easy to use. You can choose a cheaper charger but why skimp?
Nitecore Digicharger D2 $18.90
3 Protected cell 18650 batteries to choose from (No chinese junk here). Think of protected cells as having built in circuit breakers to keep things from going boom. They also keep you from over draining your batteries which can damage the cell and make them unsafe.
Panasonic NCR18650PF Protected 2900mAh $8.75
LG 18650MH1 Protected 3200mAh $8.95
Panasonic NCR18650B Protected 3400mAh $9.65
I suggest you go to this thread and ask Richard (RMM) any questions you have. He won’t push things down your throat and try to sell you something you don’t need. He’s a honest guy who is on the level.
MTN Electronics: LEDs - Batteries - Lights - Chargers - Hosts - Drivers - Components - 1-Stop-US Source