Does anyone know where to find a CHEAP battery
charger for 4.30V—4.35V Lithium 18650 batteries
or is there some simple way to make a cheap 4.2V
charger into one ?
The Opus ver 2.1 (3100 / 3400) has that switch to adjust termination voltage in the back, are you looking for a better / Cheaper alternative?
I know about the Opus , I’m looking for the cheaper
alternative. Maybe a charger with 1 or 2 slots.
You have to put some work in yourself 
this thread shows how to make your own 4.3/4.35v charger.I made one up and it works.Good luck.
I will look into these 2 chargers. Thanks CRX
I read what Comfy Chair did , but I’m not mechanically
inclined. To get it to work safely , I think is just a little
beyond my capabilities.
Tell RMM what voltage output you want and at what charging current and he’ll be able to set it up for you. If anything, ask him to epoxy or super glue the pots so they can’t be turned by accident.
Now this looks interesting to me. I just need to
contact RMM and see what he can cheaply put
together for me.
Where can I get a 4.30v—4.35v battery charger that’s
ready to plug & play ?—-Just put in the batteries and
let it charge !—(A cheap one.)
RMM—sells several nice chargers— My feelings are —better to spend a little more for the charger than have to build a new house