Originally Posted by rthrbelsewhere
What's your thoughts between the differences of the "Battery Tender" product and the Trimetric? I might be trying to compare apples to oranges here, but am still curious.
I have 2 marine/crank/deep cycle 12v batteries.
Nothing special. Not nearly as much storage capacity
as some good 6v.
But-- we have camped in the summer for a week with
no hookups, used the ceiling exhaust fan over our bed
a couple hours a night, used some lighting late evening,
early morning, exhaust fan over the stove, water pump,
don't forget the control boards in your water heater
and fridge, etc.
We did not have any TV reception so it was not used.
Got by 6 nights without needing to fire up the little
Honda genny to charge batteries.
Since I can go a week I figure I don't need the
honking big 6v that many other folks use.
I use a battery tender Jr because it does have a "brain"
and it does shut off when the batteries are fully charged.
It has an LED that changes from red to green when the
batteries are fully topped up.
I admit that I don't know if my on board power center is
3 stage or not.
Don't really care.
I know it cost a LOT more than a battery tender Jr.
I -guess- it probably uses more watt$ of power if it's
left on 24/7/365.
I figure if we get a spike or lightning strike I'd rather buy
a new $30 battery tender Jr than a new power center.
Also I know that most all electronics have a life span.
Why risk an expen$ive piece of equipment when a much
cheaper one will do the job?
Just the stupid (noisy) fan on my power center would
cost more than a battery tender Jr.!
(I also use either a battery tender Jr or the cheap Harbor
Freight knock off version on my motorcycle, lawn tractor
and my Silverado when it's sitting idle most of the winter.
Of course, none of these have a built in charger!)
Others around here use their on board built in chargers
24/7/365 and get by fine. I probably would too.
I just do it my way....... (apologies to Frankie)
I gotta plug a local business.
They have the Battery tender Jr for $20 and I -think-
free ground shipping. Not positive about the shipping...
That is the best price I've found anywhere period.