Hi,
I finished my first box mod, it's got 2 18650's in series going into a LM2596S DC-DC stepdown module.
The switch is fitted to a MOSFET (IRF540A MOS-FET Transistor TO220 Case | Maplin) so it doesn't die with the amount of amps coming from the duals.
I've got a Volt display connected to the 510 connector.
Without and atty attached it shows 7.6v (lower than i'd expect) but when I attach any atty it drops to 4.9 max.
Any ideas what ive done wrong?
I finished my first box mod, it's got 2 18650's in series going into a LM2596S DC-DC stepdown module.
The switch is fitted to a MOSFET (IRF540A MOS-FET Transistor TO220 Case | Maplin) so it doesn't die with the amount of amps coming from the duals.
I've got a Volt display connected to the 510 connector.
Without and atty attached it shows 7.6v (lower than i'd expect) but when I attach any atty it drops to 4.9 max.
Any ideas what ive done wrong?