Harbor Freight battery maintainer
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Road Warrior
Joined: Dec 2012
Posts: 1,255
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From: Arkansas
I bought one of the inexpensive HF maintainers, and before I hooked it up, I noticed on the package/instructions that it was NOT recommended for AGM batteries. I returned it and got my money back. Bought one off evil-bay, 750ma, and it works fine for the past year. Cruiser ? brand
Stellar HDF Member
Joined: Apr 2012
Posts: 3,117
Likes: 1,193
From: Maryland
Here is more food for thought...
According to this Yuasa tech manual...
and...
The rating on that Viking is 4 amps.
According to this Yuasa tech manual...
When charging a motorcycle or other small battery, the battery charger should not exceed 3 amps. Most automotive types of battery chargers are not suitable for charging a motorcycle battery because they output current above 3 amps. For the correct charge rate a rule of thumb is to divide the battery’s amp hour rating by 10. For example a 14 AH battery should be charged at 1.4 amps (14AH ÷ 10 = 1.4amps).
The current output of a battery charger, used to provide
a maintenance charge for powersports-sized batteries,
should not exceed 3 amps. Automotive or high-rate types
of battery chargers should not be used as they can overcharge
and damage small batteries.
a maintenance charge for powersports-sized batteries,
should not exceed 3 amps. Automotive or high-rate types
of battery chargers should not be used as they can overcharge
and damage small batteries.
Last edited by T^2; Nov 27, 2017 at 06:31 PM.
Stellar HDF Member
Joined: Apr 2012
Posts: 3,117
Likes: 1,193
From: Maryland
How about another twist:
The Viking's users manual states...
At first glance that statement seems clear enough. But... knowing how other maintainers work (or have worked in the past), they tend to (or used to) supply their rated current during the charge cycle. The manual does have a number to call for technical questions. Taking in consideration the cautionary statement put out by Yuasa, I might avail myself of it and ask for further clarification on that note/statement.
The Viking's users manual states...
Note: The charger automatically selects the appropriate
charge current based on battery capacity and power.
charge current based on battery capacity and power.
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Road Captain
Joined: Jan 2012
Posts: 713
Likes: 235
From: Florida
I just the other day purchased a HF charger/Maintainer - Viking brand. It claims suitable for cars, RV's, Tractors, Pickups, Boats and Motorcycles.
It supports AGM, GEL, Deep Cycle and standard batteries.
Lists 4 amps but "Fully Adjustable Microprocessor Control feature adjusts the amperage rate to charge and maintain batteries........"
'
My "Battery Tender" branded charger just died after 4 years of service so I purchased the HF one because of convenience of the HF store and of need.
It appears to work well as it topped off both my bikes and went to maintenance mode in a short period of time.
'
Cost was $26.xx. part number 63350. Time will tell.
It supports AGM, GEL, Deep Cycle and standard batteries.
Lists 4 amps but "Fully Adjustable Microprocessor Control feature adjusts the amperage rate to charge and maintain batteries........"
'
My "Battery Tender" branded charger just died after 4 years of service so I purchased the HF one because of convenience of the HF store and of need.
It appears to work well as it topped off both my bikes and went to maintenance mode in a short period of time.
'
Cost was $26.xx. part number 63350. Time will tell.
Stellar HDF Member
Joined: Apr 2012
Posts: 3,117
Likes: 1,193
From: Maryland
I just the other day purchased a HF charger/Maintainer - Viking brand. It claims suitable for cars, RV's, Tractors, Pickups, Boats and Motorcycles.
It supports AGM, GEL, Deep Cycle and standard batteries.
Lists 4 amps but "Fully Adjustable Microprocessor Control feature adjusts the amperage rate to charge and maintain batteries........"
It supports AGM, GEL, Deep Cycle and standard batteries.
Lists 4 amps but "Fully Adjustable Microprocessor Control feature adjusts the amperage rate to charge and maintain batteries........"
Like I said, I would want some further technical information on it before making a decision.
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