Battery Tender Plus Charger

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Battery Tender Plus Charger

The Battery Tender Plus is a 1.25 amp battery charger designed to fully charge a battery and maintain it at proper storage voltage without the damaging effects caused by trickle chargers. Included is a quick connect ring terminal harness for hard to reach areas and alligator clips for an alternate connection.


  • Input: 120VAC / 60Hz 
  • Output: 12V / 1250mA
  • Temperature compensated to ensure optimum charge voltage according to ambient temperature
  • Automatically switches from full charge to float charging mode
  • Battery Tender at 1.25 amps will charge as fast or faster than any 3 amp charger available
  • Reverse Polarity Protection to ensure user safety. Red & Green Lights Alternately Flash in this condition
  • Complete 4-step charging program (Initialization, Bulk Charge, Absorption Mode, Float Mode)
  • 10 year Warranty
5 / 5
Bang For The Buck
4.8 / 5
Product Style RevZilla Item # Manufacturer Product # Availability
12 Volt 177709 021-0128/0210128 In Stock: Ships within 24 hours


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5.0 / 5.0
23 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
Bang For The Buck
4.8 / 5
Bang For The Buck
5 / 5
works as requested
Good product. They want 37 more characters so here they are lol
August 17, 2015
Bang For The Buck
5 / 5
Works so well I decided to buy another one
I have had one of these for several years and the amount of battery replacement costs it has saved me has more than covered even the full price of the units. I was skeptical when first purchased and I leave a seldom started cycle battery connected to it full time when we aren't riding. I have not replaced a battery in years now and before it was always 1 - 1 1/2 yr battery life. Decided to buy another one for an electric generator battery that I just found discharged/sulfated and it will hopefully make even that one last a long time now.
December 21, 2013
Bang For The Buck
4 / 5
Just does what it says
Removed it from package and plugged the bike in and let it work. I no longer worry about a dead battery in the morning up here in the cold north east.
November 11, 2013
2011 Ducati Monster 796
Bang For The Buck
5 / 5
Excellent Tender
Excellent battery tender! Easy hook-up. I connected prior to leaving for 8-days to ensure my battery remained strong while I was away. Battery tender operated as stated.
September 15, 2013
2013 Can-Am Spyder ST
2 for ATVs
I bought two of these units for my ATVs and hooked up the quick connect. ATVs are not used from October through about April and chargers work in northern Michigan with winters of down to 20 below zero. Come April both start without a problem. Going on 7 years and still working flawlessly. A great product!
March 3, 2013
2006 Bombardier Outlander 400 HO 4x4
Excellent have one for each bike.
I bought a Battery Tender for my Harley Lowrider in 2004. I use it from about November until I can ride again some time in April. I bought a second bike in 2009 and would switch the tender between bikes over the winter. I decided to get this second unit for my 2011 BMW R1200 GSA. You may hear that BMW's Canbus system won't allow the use of the Battery Tender, but I have not had any problems. I am also still using the original battery in my eleven year old Harley.
January 20, 2015
2011 BMW R1200GS Adventure
Bang For The Buck
5 / 5
Easy to use
Easy to use. plug it in and forget about it till spring.
February 24, 2016
2014 Harley Davidson Street Glide FLHX/I
Does as it should
Not much to say. I plug my bike in when I know I won't ride it for a few days. When I decide to ride again, it cranks right
March 15, 2016
2013 Honda CBR500R
Great for winter
This product has been great. My battery died when it got cold and I couldn't ride. I bought this a few months ago and plugged everything in. Yesterday I took the battery off the tender, put it in the bike, and it instantly started up. This product is great.
February 21, 2016
2015 Kawasaki Ninja 650R
Bang For The Buck
5 / 5
Very useful in emergencies too
I use it in my garage to keep my battery charged. Also use it it when the battery is low to charge it up. Ine time I had the battery die on me, I got my car, hooked it up for 15 minutes and I was up and running. I love it.
September 28, 2015
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Why did you choose this?
RevZilla Store
to keep battery in good shape during times of low riding frequency (winter, etc.)
LDNYC on Oct 26, 2016
Small and rapid charge
brett s on Jun 26, 2016
to keep battery in good shape during times of low riding frequency (winter, etc.)
LDNYC on Oct 26, 2016
Quality built, so far no issues.

Kan-Yi L on Sep 23, 2016
Small and rapid charge
brett s on Jun 26, 2016
needed trickle charge set up
Albert L on Mar 15, 2016
Nothing better than a Battery Charger / Tender, I use them for everything, motorcycles, quads, lawn mowers and the Vette since it sits for long periods of time in between Sunday rides. Great Product at any price and saves you of replacing the expensive batteries.
Brian M on Feb 22, 2016
had one just like it before, finally wore out, needed a new one.
Todd L on Dec 7, 2015
Seemed like what I needed. Hope I'm right.
Danny S on Nov 23, 2015
Know the brand
Christian T on Nov 7, 2015
ambient temperature option
Mathias K on Oct 10, 2015
to maintain and extend the efficiency of the battery
Earl S on Aug 13, 2015
Had one for over 15 years and it still worked fine. Purchased newer bike and wanted another. Quality product.
W. Blake C on Aug 13, 2015
I now have two bikes, haven't been good about alternating them, had one battery go down because of inactivity.
"" " on Jun 26, 2015
Reputation as the best battery tender.
proctor m on Jun 12, 2015
to maintain and charge battery (R6)
r6sasquatch on May 18, 2015
Keeps bike ready to go. Never a worry in the mornings.
T A on Jan 25, 2015
It makes sense to buy this, it charges the battery then goes into a trickle charge to keep good for long winter storage (no need of a messing around on having to find the charger and trickle charge) and as a bonus it has a common Q.D. connector strait to the battery for easy access.
Jarred B on Jan 16, 2015
Werner S on Nov 27, 2014
We get some cold winters, so I need this to keep my batteries alive over these cold seasons.
Judah H on Nov 23, 2014
On recommendation of my son.
Barry B on Nov 14, 2014
I don't commute with my motorcycles and ride mainly on weekends. I've read a number of positive online reviews and thought this would be the ideal charger for my 2 street bikes.
Steve H on Nov 1, 2014
I have one since 2003 and my battery lasted over 10 years. I only changed the battery because I felt I was on borrowed time. Needed another for my second bike I just picked up.
BMW335 on Oct 23, 2014
it will stop charging when battery topped off and won't fry my battery
Arturo R on Jul 9, 2014
My last battery tender was well over ten years old when a near by lighting strike toasted the charger, and a few other things. For the money, you can't find a better charger. Here's to ten more years with a new one.
Paul O on Jun 27, 2014
I've owned Battery Tender product before, they are awesome!
Brent B on May 18, 2014
Although we do not have the freezing winters as the states back east, it does cold enough here in S. Cal at times for the batteries in my bikes not to start my bikes. I bought this battery tender and all of my headaches with are gone!
felipe b on May 2, 2014
After going thru two batteries, this was the smartest option for me.
Walter G on Apr 23, 2014
simple and effective
Rich B on Mar 16, 2014
Reviews helped, product seemed to work for others.
Paul H on Feb 17, 2014
Word of mouth.
Zachary W on Feb 8, 2014
Turns out Aprilia's tend to lose charge over time when sitting.
Kevin R on Feb 5, 2014
Hopefully this will maintain my battery as stated and the reviews said this would be the case....
D R on Feb 5, 2014
My landlord stole my other one. :)
Kyle P on Jan 27, 2014
I have had one of these for several years and the amount of battery replacement costs it has saved be has more than covered even the full price of the units. I was skeptical when first purchased and I leave a seldom started cycle battery connected to it full time when we aren't riding. I have not replaced a battery in years now and previously 1 - 1 1/2 yr battery life. Buying another for an electric generator starter battery i ruined by letting it sit too long.
Doug C on Dec 21, 2013
Recommended to be used to maintain a charge on my portable generator battery.
Saul Z on Dec 11, 2013
Nicholas P on Nov 21, 2013
I anticipate there will be a few long periods during the winter where I won't be able to ride my bike. I want to make sure my Tiger is charged up and ready to go when I'm ready. This will keep the battery healthy and hopefully eliminate any surprises.
Colin S on Oct 19, 2013
can't say enough about the peace of mind that this product gives you on those cold winter nights where you know the charger's hooked up and keeping the battery fresh for your next ride...I ride year round and these chargers flat work investment to get the full life of your one, you won't go wrong!
Walt T on Sep 21, 2013
Quality built, so far no issues.

Kan-Yi L on Sep 23, 2016
needed trickle charge set up
Albert L on Mar 15, 2016
can i use this on my 2013 daytona 675 battery?
mark t on Oct 15, 2013
BEST ANSWER: Mark t Yes it will work.
I use this tender on all my 12volt battery's AGM and lead acid (motorcycles, Grove crane, trucks,cars) just plug it in and let it go to work. Connect it directly to the battery and it will not interfere with a CAN-bus electric system. The battery's never get hot unless they have bad cells. Motorcycle battery's take about 12 hours to charge and truck/crane battery's 24 hours on average. I do not use it for Lithium iron phosphate battery's.
So I can just plug it, leave it and it wilk keep the battery charged at all tine without damaging it?
Enrico M on Jul 2, 2015
BEST ANSWER: Yes. I have used this product for several years on various bikes and cars. It is not designed to jump-start cars or recharge dead batteries, but it will maintain charge very well. I had this on my 2013 Ducati Panagale over this past winter and it has worked well. I also have used it on cars in storage. You could take the battery out, but that screws up on board computer settings for some vehicles. This comes with alligator clips, but your bike may have a place to connect the other loop quick-connectors which are included for motorcycles.
I have a 2012 BMW 650 Sertao. Do I purchase a 6 or 12 volt?
jeff p on Feb 9, 2015
BEST ANSWER: depends on the battery you have, if stock, the 12 volt with trickle charge
Will this charger work with BMW Gel batteries? Just realized one of my bikes was replaced with a BMW Gel Battery
BMW335 on Nov 1, 2014
BEST ANSWER: I use this device on the original battery in my 2011 R1200 GSA with no problems.
guys will this also work for 220v coutries as opposed the 110v you have in US ?
A shopper on Oct 12, 2015
BEST ANSWER: Input Voltage AC110-120 VAC, 50-60Hz
Working Voltage AC85-130 VAC, 50-60Hz