You have a few options. The cheapest LPF chargers are hardwired to 14.7V, and if you are lucky will turn off once fully charged in case you forget to unplug it, but probably won't. Then, there is a decent
price jump to get a "smart" charger that is programmable.
Or, you can go with a
power supply. I would not get one that is so easily adjustable that you bump the controls and overcharge your battery. There is also a huge range of quality and voltage regulation in power supplies. I would shy away from the
cheap ones. A PS is also definitely not going to turn off at full charge (or whatever you set it to). That might be what you want.
I have tried a few power supplies, and use a 90A Power supply under close supervision when I need to charge quickly. Not at all efficient, at 60A output it will trip the 15A AC circuit breaker. I also have a 10A supply as pictured, and it's tough to get 10A out of it. Heavy wires, with a voltage meter right on the battery instead of the built in, and crank the voltage up really high watching the external meter, and you can get there, but you need to constantly
monitor it and adjust the voltage. Or, live with only 5A average instead of 10. So, I would pass on that.
If it were me, I would get something like the lower end of
Victron chargers.
The "smart" versions like
Victron Smart IP65 12-Volt 10 amp Battery Charger have an LFP mode that will charge to 14.2 volts, with a "storage" feature that only charges to 13.5 V. It can also be set as a power supply where you set any voltage you want.
If you have any other victron
gear, you can add any victron product in Demo mode in the app to see the features it supports.
Linear Mode
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