Model # BM3B

Internet #202710992

Store SKU #273222

BLACK+DECKER 120-Volt Battery Maintainer
0885911216357

BLACK+DECKER

120-Volt Battery Maintainer

$2048 /each
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Product Overview

The BLACK and DECKER BM3B is ideal for keeping your 6-Volt or 12-Volt battery fully charged when not in use. Simply plug the maintainer into any AC outlet and connect to your battery in any one three ways: Battery clips 12-Volt Dc accessory plug or the battery terminal rings. The BM3B will do the rest of the work, monitoring your battery with the Automatic micro processor, so that you can never over charge the battery.

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Customer Questions & Answers

Does this B&D battery maintainer come with the battery clips?

Does this B&D battery maintainer come with the battery clips? They're not shown in the photo. Thanks.
Asked by: Roberto
Yes. It comes with 3 connector choices to charge: traditional battery clips, cigarette lighter, or wired in quick connect.
Answered by: Jeff
Date published: 2017-04-11

May I leave this BM3BC model charger connected and charging for an extended period eg: 6 months?

Asked by: Joe
Yes, but I like to do intermittent charging.
Answered by: Scp720
Date published: 2017-02-08

Can I buy battery clips separate

Asked by: Wes
Battery clips come with the unit. It's a kit.
Answered by: Scp720
Date published: 2017-04-08

Will this device charge a battery for a tractor style mower that has gone flat?

Will this device charge a battery for a tractor style mower that has gone flat?
Asked by: jcm
The charger should charge the battery OK. However, the charge may be an extended length of time to do so. This is because the charge is a " trickle charge" as opposed to "fast charge" or "start charging".
Answered by: Scp720
Date published: 2017-06-01
  • y_2017, m_7, d_23, h_6CST
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Customer Reviews

120-Volt Battery Maintainer is rated 4.4 out of 5 by 67.
Rated 3 out of 5 by from This charger will not EASILY charge a dead battery -- the polarity checker stops it if there is l... This charger will not EASILY charge a dead battery -- the polarity checker stops it if there is less than 2V. However, it does charge for about a minute before checking. So... I was able to trick it into charging my totally dead car battery. I let it charge on 12V (green light flashing) until it stopped & red light came on. Then I switched it to 6V (green light solid) until it stopped & red light came back on again. Back to 12V, then 6V, etc. I read a book while doing this. After a couple chapters it had charged enough to stay charging on 6V, so I went inside and ate dinner. When I came back out I switched it to 12V & it continued charging for a book chapter. Hopefully I won't need to do this again as I plan to use this $20 device as intended: easily keeping the car battery charged between infrequent uses. But, in a pinch, with some patience, it can do the work of the more expensive models.
Date published: 2017-04-11
Rated 3 out of 5 by from This charger is basic and is more than adequate for... This charger is basic and is more than adequate for motorcycle use. The clip or harness option is very convenient. If you want a charger that's going to blast your battery full in 15 minutes and then go into trickle mode go elsewhere but if you want a steady charge overnight, this is it.
Date published: 2017-04-07
Rated 5 out of 5 by from So far, So good Its a really, really slow charge but it does charge and maintain. I put it on my camper deep cycle after each trip and it takes a couple days to top off, but it does work and then it switches over to maintain mode.
Date published: 2017-05-09
Rated 5 out of 5 by from Cured my car! My Subaru ran out of battery 2 years ago, and since then it's up very often. I had the battery checked and it was fine. So I tried this equipment and charged the battery. It worked and the car is very well so far.
Date published: 2017-07-18
Rated 1 out of 5 by from I returned it to the store. The plug connection is... I returned it to the store. The plug connection is inverted comparing with the motorcycle battery and it is not powerful enough to recharge a empty battery. The cycle initiates, but stops few minutes later.
Date published: 2017-05-23
Rated 5 out of 5 by from Compact Charger I like the various connections that come with it. I use it to maintain portable generator battery and use eyelet connection.
Date published: 2017-06-06
Rated 1 out of 5 by from Unit not working This model came out of the box not working Cheap little unit-I will return it and look for a sturdier unit.
Date published: 2017-04-25
Rated 5 out of 5 by from It keeps batteries fully charged. Using on sprayer and atv and has worked fine, with no noise. It keeps batteries fully charged. Using on sprayer and atv and has worked fine, with no noise.
Date published: 2017-06-10
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