Mtn 7135 + Fet driver questions

Flashlight Modding and DIY Parts
1

I’m currently building a light for a friend, using a fet + 7135 driver. It will run on 3 Nimh D cells because I know the aforementioned friend will not take care of li-ion cells.

He wanted to know if it will still take alkaleaks after im done with it and i hadn’t thought about it because i dont really use alkalines anymore.

I thought about throwing a schottky diode in series but I dont think the extra voltage would be an issue, if memory serves the mcu is good for 5v and with the way alkalines sag under load, but i thought i’d make sure.

Thanks

2

Voltage range 2.7-5.5v.

3

Avoid using alkalines. They suck at high current draw, max rating for most D cells is 1A. They’ll have lowered capacity at this rate too. Waste of money. Also: Tell your friend to not mix NiMH+alkaline.

4

I had to explain to him that it would eat alkalines for breakfast , but I think he was just speaking of a case of have to. You know, it’s dark, NiMH’s are dead.