---
product_id: 42052524
title: "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"
brand: "bmk bluemickey"
price: "$125"
currency: NZD
in_stock: true
reviews_count: 4
category: "Bmk Bluemickey"
url: https://www.desertcart.nz/products/42052524-bmk-12v-5a-smart-battery-charger-portable-battery-maintainer-detachable
store_origin: NZ
region: New Zealand
---

# 5A fast charging current Supports 15-100Ah battery capacity 72-hour multi-safety protection 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

**Brand:** bmk bluemickey
**Price:** $125
**Availability:** ✅ In Stock

## Summary

> 🔌 Power up smartly — never get stranded with BMK’s intelligent battery guardian!

## Quick Answers

- **What is this?** 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 by bmk bluemickey
- **How much does it cost?** $125 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.nz](https://www.desertcart.nz/products/42052524-bmk-12v-5a-smart-battery-charger-portable-battery-maintainer-detachable)

## Best For

- bmk bluemickey enthusiasts

## Why This Product

- Trusted bmk bluemickey brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Smart 4-Stage Charging:** Automatically adjusts charge from 25% to 100%, ensuring optimal battery health without overcharging.
- • **Universal Compatibility:** Works seamlessly with Pb/SLA/VRLA/GEL/AGM lead acid batteries for cars, boats, lawn mowers, and more.
- • **Advanced Safety Features:** Includes 72-hour safety timer, short circuit, overload, and reverse polarity protection for worry-free charging.
- • **Defective Battery Detection:** Diagnoses battery condition before charging to prevent damage and extend battery life.
- • **Portable & Lightweight Design:** Compact 15.9oz charger with detachable alligator clips, perfect for on-the-go battery maintenance.

## Overview

The BMK 12V 5A Smart Battery Charger is a portable, multi-stage charger designed for 15-100Ah sealed lead acid batteries. Featuring advanced defective battery detection and 72-hour safety protections, it ensures fast, reliable charging for cars, boats, lawn mowers, and more. Lightweight and ETL certified, it combines convenience with professional-grade performance to keep your batteries healthy and ready.

## Description

Buy 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: Battery Chargers - desertcart.com ✓ FREE DELIVERY possible on eligible purchases

Review: Cheap & ease of use; reliable - If your have variation of voltage from the utility (100-240), this product works as designed. I am a photovoltaic technician and use it to keep battery toped of & if a battery is lying around--it will prevent it from getting sulfated. I reached out to a name brand & I was disappointed that the rep (owner/ceo), didn't even know that his competitors have the voltage variation available like this offers. It prevents it from killing the power supply (charger) if you have constant voltage sages. I waited some time before evaluating it. It charges up to 14.4 vdc (for agm & gel batteries) & back to 13.6 vdc after the battery is charged (floating)--as it should. Have been using it for various weeks consecutively w/o a hickup. Update: I purchased a 2nd unit to maintain my 2nd car's battery & the other unit has been reliable. I recommend this unit. Works as designed, a very good price, I have had the original one connected weeks straight day-after-day. Worthy buy. Update #2: have been using this unit for months straight in a row DURING HEAVY voltage sages & outages AND OVERVOLTAGE situations (scarry situations) and to my surprise--still ticking as expected (better than). I have two other chargers doing maintenance for car batteries and I now have to purchase a replacement units (plural) for that usage. The only reason I don't purchase 1 or 2 more of this unit is because I need a higher capacity. I am going to look into seeing if this manufacturer has a higher capacity... i do like to give credit for a good quality item for a fair price. Good purchase
Review: One of the best maintenance chargers I;ve ever owned. Actually works! - I've owned this for 10 months now. I purchased it to maintain/charge the AGM battery in my '12 Silverado. Modern vehicles use a lot of power just sitting. If I didn't drive it for a few days sometimes the battery would drop below what is needed to even start it so I needed a maintainer to top it off while it sat. I wired an SAE Connector to the battery so that I could connect this charger to the battery without having to open the hood. It has worked perfectly. I especially like the fact that it determines how charged the battery is as part of the charging process. It then charges the battery fully and goes into maintenance trickle-charge mode when the battery is full to prevent overcharging. The "maintenance"charger I had before this, from a well known brand, claimed to do the same thing but really didn't and it overcharged my battery which shortened it's life. This one actually does what it should. It actually works! I also like the saft it uses an SAE connector so you can use different connectors on it rather than being forced to use just one type.

## Features

- 【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

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B06XK7PM9F |
| Amperage | 5 Amps |
| Best Sellers Rank | #61,044 in Automotive ( See Top 100 in Automotive ) #319 in Battery Chargers |
| Brand | BMK BLUEMICKEY |
| Bulb Type | LED |
| Customer Reviews | 4.3 4.3 out of 5 stars (3,615) |
| Date First Available | March 13, 2017 |
| Is Discontinued By Manufacturer | No |
| Item Weight | 15.9 ounces |
| Item model number | 4333804069 |
| Manufacturer | BMK BLUEMICKEY |
| Manufacturer Part Number | 4333804069 |
| Product Dimensions | 5.9 x 2.78 x 2.2 inches |
| Special Features | emergency light portable electronics devices battery charger |
| Voltage | 12 Volts |
| Wattage | 60 watts |

## Product Details

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

## Images

![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 - Image 1](https://m.media-amazon.com/images/I/71ENcU-sjWL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Cheap & ease of use; reliable
*by N***Z on March 11, 2021*

If your have variation of voltage from the utility (100-240), this product works as designed. I am a photovoltaic technician and use it to keep battery toped of & if a battery is lying around--it will prevent it from getting sulfated. I reached out to a name brand & I was disappointed that the rep (owner/ceo), didn't even know that his competitors have the voltage variation available like this offers. It prevents it from killing the power supply (charger) if you have constant voltage sages. I waited some time before evaluating it. It charges up to 14.4 vdc (for agm & gel batteries) & back to 13.6 vdc after the battery is charged (floating)--as it should. Have been using it for various weeks consecutively w/o a hickup. Update: I purchased a 2nd unit to maintain my 2nd car's battery & the other unit has been reliable. I recommend this unit. Works as designed, a very good price, I have had the original one connected weeks straight day-after-day. Worthy buy. Update #2: have been using this unit for months straight in a row DURING HEAVY voltage sages & outages AND OVERVOLTAGE situations (scarry situations) and to my surprise--still ticking as expected (better than). I have two other chargers doing maintenance for car batteries and I now have to purchase a replacement units (plural) for that usage. The only reason I don't purchase 1 or 2 more of this unit is because I need a higher capacity. I am going to look into seeing if this manufacturer has a higher capacity... i do like to give credit for a good quality item for a fair price. Good purchase

### ⭐⭐⭐⭐⭐ One of the best maintenance chargers I;ve ever owned. Actually works!
*by T***G on September 12, 2020*

I've owned this for 10 months now. I purchased it to maintain/charge the AGM battery in my '12 Silverado. Modern vehicles use a lot of power just sitting. If I didn't drive it for a few days sometimes the battery would drop below what is needed to even start it so I needed a maintainer to top it off while it sat. I wired an SAE Connector to the battery so that I could connect this charger to the battery without having to open the hood. It has worked perfectly. I especially like the fact that it determines how charged the battery is as part of the charging process. It then charges the battery fully and goes into maintenance trickle-charge mode when the battery is full to prevent overcharging. The "maintenance"charger I had before this, from a well known brand, claimed to do the same thing but really didn't and it overcharged my battery which shortened it's life. This one actually does what it should. It actually works! I also like the saft it uses an SAE connector so you can use different connectors on it rather than being forced to use just one type.

### ⭐⭐⭐⭐⭐ Mounted in vehicle
*by J***E on February 24, 2020*

So far I have been really happy with this battery maintainer. My Nissan Armada has a slight parasitic drain on the battery that will kill it if I leave it sitting for a week or so. I mounted this charger under the hood next to the battery and ran the power plug out the front grill. I then plugged it into a timer that only runs for about 4 hours a day. I purchased it in September, and so far it has worked through a very snowy winter where temperatures have gotten as low as -20 below zero. I don't think it has gotten water directly splashed on it, but I have driven through pouring rain and car washes that spray from all sides of the vehicle even from underneath. So far I'm impressed with it. Update, Sold the Armada and moved the charger to a small car we keep as a spare. It sat for most of the year through sub zero winter days, and started right up when I needed it last month. I bought a second one for my pickup and it has worked great. I ran into an issue where I killed the battery while trying to jump start an old diesel plow truck, (one of the cells had intermitant activity) and the charger indicated the fault. After getting a new battery it has kept my pickup charged through one of alaska's coldest winters. I'm ordering a third one for my plow truck as I only use it a few times a year.

## Frequently Bought Together

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*Product available on Desertcart New Zealand*
*Store origin: NZ*
*Last updated: 2026-02-14*