Dead Battery...... Battery Tender?
Senior Member
Joined: 10-15-2007
Posts: 199
From: Yukon
I use this brand:
They have several options including hard wiring to the batt., using the lighter socket, and clips right on the battery posts. They will not boil the battery, rather just maintain.
I have one on my tractor, motorcycle, generator and have used one on my mother s car which is frequently stored up to 6 months at a time.
I highly recommend for long term storage as I have never had a battery problem since using.
They have several options including hard wiring to the batt., using the lighter socket, and clips right on the battery posts. They will not boil the battery, rather just maintain.
I have one on my tractor, motorcycle, generator and have used one on my mother s car which is frequently stored up to 6 months at a time.
I highly recommend for long term storage as I have never had a battery problem since using.
For topping up a battery that loses charge each time it is driven short distances under heavy winter electrical loads you need something that can add several amps in a shorter time. A solar charger for example would not handle it.
In a couple of days I'll have the CTEK MULTI US 3300 (3.3 amps) permanently mounted in the trunk. Then I should be able to plug-er-in for an hour or two when required - battery blanket, charger and block heater.
I earlier stated the CTEK was well made .... but, when I took it outside to top up another vehicle at -15C, the power cord was so stiff that I could not lay the charger flat to observe the LEDs. I told CTEK to put a flexible cord on their units.
Senior Member
Joined: 08-06-2008
Posts: 1,761
From: Grand Haven, MI
The above charger does 3 stages, the 1st is a fast charge at 3 amps for really low batteries, the second is around 1 amp for almost fully charged batteries, and then there is the third which is a trickle charge to maintain fully charged batteries.
This year I have had down to -9F (-23C), and I too have noticed that the cord(s) get very stiff.
This year I have had down to -9F (-23C), and I too have noticed that the cord(s) get very stiff.
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