TrueCharge 20 Voltage Adjustment?

[Jon Schneider]

I'm still pluggin' for the cheap toggle switch.  Put it somewhere you can see and remember to use, and your reserve bank charging issues will simply disappear.

FWIW, I believe that Stu owns the patent to the toggle switch, which may be why his is so strongly promoting it 

Seriously, Dave, these products seem to deliver <0.6 amps in float stage, but I don't know if that's little enough to qualify as giving the battery a rest per Stu's suggestion.  You may want to combine the trickle charger idea with a toggle switch (Stu, I'm trying to earn you that commission) so that when you do let give the battery a float charge, you only do so for a few days or a week and then let it rest for a few weeks. 

[Stu Jackson]

Truth is, Jon's almost right.  Our boat is held together completely by toggle switches:  combiner ON/OFF; MC-612 regulator Small Engine Mode; fuel pump remote switch in engine compartment for bleeding; galley drain assist pump; saloon lights and galley lights (added see Projects and wiki).  Useful little thingies...

[David Sanner]

Let them rest eh?  Mmm... now that I've got a 'DC Shore Power'
setup I need to revisit leaving my TC20 in float mode.

One nice feature about the TC20 is that every 21 days (regardless
of the float mode) it restarts a full charge cycle so if the float is
turned off  and the batteries are 'resting' they'll be topped up
(maintained) every 21 days.

Turning the float mode off will resolve the too high of float voltage
for my US Battery brand of 6v batteries...  perhaps I'll just put the
battery temp on 'cold' and get the max charge voltage.

Finally, since my house batteries won't be running the fridge and
will typically be 'resting' having the starting battery hooked up to the
same charger is less likely to create issues with overcharging.

So the take away is floating a battery at too high of voltage can
cause grid corrosion and not charging them up fully after use will
also cause diminished capacity.    ...  So if cold beer is a requirement
get a DC shore power supply and your batteries rested.

btw, here's the MeanWell 12V 29A 350W switching power supply that I used:
http://tinyurl.com/ebay-DC-power-supply ($58 w/ shipping)