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BMK 12V 5A Smart Battery Charger Portable Battery Maintainer with Detachable Alligator Rings Clips Fast Charging Trickle Charger for Car Boat Lawn Mower Marine Sealed Lead Acid Battery

4.3 4.3 out of 5 stars 3,567 ratings

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Purchase options and add-ons

Brand BMK BLUEMICKEY
Color 12V@5A
Product Dimensions 5.9"D x 2.78"W x 2.2"H
Item Weight 15.87 Ounces
Output Voltage 14.7 Volts

About this item

  • 【UPGRADED DEFECTIVE BATTERY DETECT/FAST CHARGING CAR BATTERY BOOSTER】Updated with battery condition diagnose to detect the defective battery before charge. Input 100-240V AC, With 5A DC output current, BMK 12V 5A car battery charger is suitable for charging batteries with 15-100Ah. NOTE: To better tender the battery, please make sure the battery capacity is higher than 15Ah, it can also charge over 100Ah batteries, just more charging time. ETL Certified for performance and safety
  • 【UPGRADED 72-HOUR SAFETY FEATURES/MULTI SAFETY PROTECTIONS - BATTERY RESCUE & RECOVER】Updated with 72 hours safety feature to commence anytime the charger is onto protect marginal batteries from over charging. Made of high quality ABS, multi-protects of Short Circuit/ OV/ OC/ Overload/ Polarity Reverse, featured with Constant Pulse Current Maintenance function to avoid overcharge and discharge; Full-loaded and burn-in test prove its high reliable efficiency, stable performance
  • 【4-STAGE SMART CHARGING - FULLY AUTOMATIC BOAT BATTERY CHARGER】 12V smart charger operated with 4 stages automatic charging process by MCU controller, 25%/50%/75%/100% to indicate quantity of electricity and monitor the whole charging progress. Stop automatically when the battery is fully charged. LED indicator designed to display different charging status of the marine battery charger
  • 【UPGRADED WITH 10A FUSE ONTO RING CONNECTORS & MULTI-PURPOSES DEEP CYCLE BATTERY CHARGER】Pb/SLA/VRLA/GEL/AGM lead acid battery charger tender, operated with vulcanization function, BMK battery maintainer charger is a great choice for lawn mower, boat, car, motorcycle, electric vehicle, electric tools and emergency battery charging, lightweight(15.87oz) allows you take it to anywhere, used as Trickle Battery Charger as well
  • 【QUALIRY ENSURANCE & IN TIME SERVICE】BMK is devoted to provide boat battery trickle charger with higher qulality to meet buyers' needs better and timely after-sale services, eliminate all your worries about getting this trolling motor battery charger. Just get your Automotive Car Battery Charger Maintainer with confidence, and contact us if you have any problems about the item when using
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$34.96
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Sold by BMK BLUEMICKEY and ships from Amazon Fulfillment.
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BMK 12V 5A Smart Battery Charger Portable Battery Maintainer with Detachable Alligator Rings Clips Fast Charging Trickle Charger for Car Boat Lawn Mower Marine Sealed Lead Acid Battery
BMK 12V 5A Smart Battery Charger Portable Battery Maintainer with Detachable Alligator Rings Clips Fast Charging Trickle Charger for Car Boat Lawn Mower Marine Sealed Lead Acid Battery
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Price-24% $34.96
List:$45.99
-33% $19.99
Typical:$29.99
-25% $59.99
Typical:$79.99
-14% $29.99
Typical:$34.99
$27.35$49.99
Delivery
Get it as soon as Sunday, Mar 31
Get it as soon as Sunday, Mar 31
Get it as soon as Sunday, Mar 31
Get it as soon as Sunday, Mar 31
Get it as soon as Sunday, Mar 31
Get it as soon as Sunday, Mar 31
Customer Ratings
Easy to use
4.4
4.5
4.5
4.7
4.5
4.3
Value for money
3.8
4.4
4.2
4.5
4.4
3.7
Easy to read
3.8
5.0
4.5
3.7
Light weight
4.7
4.6
4.8
Sold By
BMK BLUEMICKEY
BMK BLUEMICKEY
GOOLOO
oanarll
NEXPEAK CHARGER
ECO-WORTHY US
input voltage
18 volts
12 volts
120 volts of alternating current
12 volts
110 volts of alternating current
240 volts
weight
15.87 ounces
0.8 kilograms
0.65 kilograms
1.34 pounds
0.45 kilograms

From the brand


Product Description

BMK smart battery charger

BMK 5A SMART BATTERY CHARGER IN HAND, ALL BATTERY TROUBLES GO AWAY.

CHARGE & MAINTAIN BATTERIES AUTOMATICALLY

STAGE 1 - DIAGNOSTIC

STAGE 2 - BULK CHARGE

STAGE 3 - ABSORPTION

STAGE 4 - MAINTAIN

STAGE 1 - DIAGNOSTIC

Desulfating the Battery Through 18V Pulse

The Charger can be used with 12-100Ah, however 12-60Ah is highly recommended for higher efficiency and battery protection.

STAGE 2 - BULK CHARGE

Charging Highest Rate Current Till 80% Capacity

Featured with LED for indicating different charging modes

Alter the charging process based on organic battery feedback.

STAGE 3 - ABSORPTION

Absorption, Till Full Capacity

Output voltage is limited to 14.7V while current declines as the battery to be fully charged.

Stabilize internal battery chemistry to increased performance and longevity.

STAGE 4 - MAINTAIN

Float, Maintain the Battery Through Pulse Charging

Battery is fully charged at this stage.

Minimize energy consumption when full power is not needed.

BAD BATTERIES DETECT

SPARKPROOF

QUICK DISCONNECT HARNESS

72-HOUR SAFETY FEATURE

DEFECTIVE BATTERIES DETECT

  • The Fault Light Flashing: Reversed Polarity
  • The Fault Light ON: Defective Battery

SPARKPROOF

  • Prevent sparks
  • Automatically check whether the connection is correct or not before powering up

QUICK DISCONNECT HARNESS

  • Connect and disconnect with the battery in seconds

72-HOUR SAFETY FEATURE

  • Upgraded 72 Hour Safety Timer to commence anytime the charger is onto protect marginal batteries from over charging

Technical Specifications

Input Voltage 100~240 Volts AC 50/60Hz
Input Current 0.5Amp (RMS) @ 220 Volts AC
Back Current Drain 1.3mA
Ripple Current <=0.12Amp (RMS)
Bulk Charge Current 5.0 Amps
Starting Volatge 4.5 Volts
Charge Voltage Rating: 12 Volts; Bulk Limited Voltage: 14.7 Volts
Operate Temperature -5~120°F
Package Size 5.90 x 2.78 x 2.20 inches
Battery Capacity 12~100Ah batteries
Battery Type All type of 12 Volts AGM, GEL, Flooded(Wet), Calium type deep cycle, VRLA maintenance free lead acid batteries
Package List 1 x Charger (Power Cord: 5.57ft.), 1 x Clip Connector (2ft.), 1 x O-Ring Connector (2ft) with 10 Amps fuse, 1 x User Manual
CHARGING TIME VERSUS BATTERY TYPE

Product information

Technical Details

Additional Information

Warranty & Support

Amazon.com Return Policy:Amazon.com Voluntary 30-Day Return Guarantee: You can return many items you have purchased within 30 days following delivery of the item to you. Our Voluntary 30-Day Return Guarantee does not affect your legal right of withdrawal in any way. You can find out more about the exceptions and conditions here.
Product Warranty: For warranty information about this product, please click here

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BMK 12V 5A Smart Battery Charger Portable Battery Maintainer with Detachable Alligator Rings Clips Fast Charging Trickle Charger for Car Boat Lawn Mower Marine Sealed Lead Acid Battery


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Customer reviews

4.3 out of 5 stars
4.3 out of 5
3,567 global ratings

Customers say

Customers like the performance and ease of use of the battery charger. For example, they mention it works well, has no issues, and is easy to install and hook up. Some are happy with the value. That said, opinions are mixed on battery life, size, charging, and quality.

AI-generated from the text of customer reviews

491 customers mention382 positive109 negative

Customers like the performance of the battery charger. They mention that it works well, has no issues, and is easy to read and hook up. Some say that the cables are too short.

"...I recommend this unit. Works as designed, a very good price, I have had the original one connected weeks straight day-after-day...." Read more

"It works! Easy to read" Read more

"...Compared to a big name branded auto trickle charger, this does a very comparable job. It will eventually float your battery around 13.4v...." Read more

"...More weirdness. But in a good way this time. Just recently it turned itself off for the fifth time in the past 13 months...." Read more

192 customers mention185 positive7 negative

Customers find the battery charger easy to use. They mention it works great, has easy instructions, and is simple to install. Customers appreciate the very detailed instruction manual. They say the indicator LEDs are bright enough to see in outdoor settings.

"...What could be easier than that? Directions are great and explain the led lights and what it is doing at each point...." Read more

"It works! Easy to read" Read more

"...This is very easy to use, easy instructions and highly recommend among other brands. Saved my Life so grateful!" Read more

"...Easy to understand instrument lights; less than a minute to install (like jumping a dead battery) & can't beat the price!" Read more

143 customers mention122 positive21 negative

Customers like the value of the battery charger. They say it's an affordable solution to their problem, and it works well. Some customers also mention that the charger has saved them money. Overall, customers are happy with their purchase and recommend it to others.

"...I recommend this unit. Works as designed, a very good price, I have had the original one connected weeks straight day-after-day...." Read more

"...This charger is a good value, but if you should have a problem, I would suggest returning it immediately rather than waiting for a response from..." Read more

"...Great charger for the price" Read more

"...This charger/maintainer has saved me so much money and my old car gets to keep on keepin' on :) ." Read more

220 customers mention74 positive146 negative

Customers have mixed opinions about the quality of the battery charger. Some mention that it's well-made and foolproof, while others say that it failed after about 2 years.

"...I use it, after several hours (maybe overnight or a day later) it turns itself off (and battery voltage is about 12.7V or so)...." Read more

"...has a higher capacity... i do like to give credit for a good quality item for a fair price. Good purchase" Read more

"...The charging cable positive and negative clips are very low quality but I didn't need those for this job." Read more

"...Granted, it falls short on cable length and some minor component quality, but overall it's actually pretty good at the core of the unit...." Read more

181 customers mention119 positive62 negative

Customers have mixed opinions about the charging of the battery charger. Some say that it's wonderful and the ideal trickle charger for a car neglected for six months. It acts like it properly charges batteries and visually indicates how much charging the battery. However, others say that the battery simply wouldn't charge, the charger stopped charging after 72 hours and went into float mode, and the battery could not even be jump started.

"...and some minor component quality, but overall it's actually pretty good at the core of the unit...." Read more

"...Also, this will stop charging after 72 hours and go into float mode. It is for safety. Not bad and you don't even have to think about it...." Read more

"...that flies to Colorado come springtime, so this is the ideal trickle charger for a car neglected for 6 months...." Read more

"...I especially like the fact that it determines how charged the battery is as part of the charging process...." Read more

134 customers mention80 positive54 negative

Customers are mixed about the battery life of the charger. Some mention that it charges the batteries and keeps them up, while others say that it completely recharged their car battery that had gotten drained. That said, some say it's easy to install and works great to charge and maintain the marine battery. However, others say it shuts down and won't maintain the battery.

"...This charger not only kept my battery from dying it rejuvenated an older battery...." Read more

"...BUT 5 times during the year it did something unexpected: it turned off a few hours after doing its typical routine. I have no idea why...." Read more

"...When these things work they are amazing! They really will revitalize a weak battery and bring it back to life!..." Read more

"...years with this charger set up, three years later the battery is still in good condition according to our BMW service rep. Amazing!" Read more

95 customers mention65 positive30 negative

Customers are mixed about the size of the battery charger. Some are impressed by the compact size, saying it fits in a tight engine compartment. However, others say that the wires/connectors are too short, and the hood it dangles.

"...Also the tightness of its construction makes me feel like it will last a longer the the last two I bought from another source...." Read more

"This is a compact deep-cycle 12 volt battery charger the size of a package of butter...." Read more

"...Granted, it falls short on cable length and some minor component quality, but overall it's actually pretty good at the core of the unit...." Read more

"...Hopefully it will continue. If it does I give 5 stars. I like that it's small and easy to handle.......jdb" Read more

31 customers mention0 positive31 negative

Customers are dissatisfied with the lighting of the battery charger. They mention that the lights are off or go out when the battery is full. Some say that the indicator lights are not that helpful, and the red light on and off forever.

"...Well the charger light was already red, because that's what happens when I plug it in...." Read more

"...Also, after being plugged in for about 5 hours, still cycled through all four LEDs, meaning that it did not get past 25% charged...." Read more

"...However, a minute or two later, it started blinking all four lights in sequence, indicating stage 2...." Read more

"...Not sure if it is supposed to desulfate the battery, no led indicator for that...." Read more

This thing is a BEAST!!!!
5 Stars
This thing is a BEAST!!!!
This thing charges up my truck battery really quick. I had a Schumacher 1.5 Amp installed in my engine bay and it would take 4 hours to bring my battery to a full charge after normal driving. This 5 Amp charger brings my battery to a full charge in about 30 minutes. I sent back the Schumacher and installed the BMK charger/maintainer inside my trucks engine bay. I put a dust cover around it to try and keep it from getting dirt inside. I saw some reviews where people said that it gets quite hot but I only need it in the winter time and not during the summer so that shouldn't be an issue for me. I must have a small parasitic drain but I can't seem to find it, so whenever I park my truck under the carport I just plug it in through a 12 volt plug port that I installed on the fender of my truck which i also just oredered from Amazon. So far everything is working great!
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