---
product_id: 278506336
title: "KW510 Car Battery Charger"
brand: "konnwei"
price: "HK$804"
currency: HKD
in_stock: null
reviews_count: 13
category: "Konnwei"
url: https://www.desertcart.hk/products/278506336-kw510-car-battery-charger
store_origin: HK
region: Hong Kong
---

# 5 Amp Fast Charging 3-in-1 Charger & Tester Smart Temp Compensation KW510 Car Battery Charger

**Brand:** konnwei
**Price:** HK$804
**Availability:** ❌ Out of Stock

## Summary

> 🔌 Power Up Smarter — Never Get Stranded Again!

## Quick Answers

- **What is this?** KW510 Car Battery Charger by konnwei
- **How much does it cost?** HK$804 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.hk](https://www.desertcart.hk/products/278506336-kw510-car-battery-charger)

## Best For

- konnwei enthusiasts

## Why This Product

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

## Key Features

- • **Pulse Repair Tech:** Revive sulfated batteries and extend lifespan with cutting-edge pulse desulfation.
- • **Safety-First Design:** 8 advanced protections including reverse polarity and overheat guard for worry-free charging.
- • **All-in-One Powerhouse:** Test, charge, and repair your 12V batteries with one sleek device.
- • **Universal Compatibility:** Works flawlessly with flooded, AGM, spiral, and gel lead-acid batteries from cars to lawnmowers.
- • **Precision Battery Health Check:** Instantly analyze voltage, resistance, and alternator status for total confidence.

## Overview

The KONNWEI KW510 is a fully automatic 3-in-1 12V battery charger, tester, and maintainer featuring a 5-amp output, pulse repair technology, and smart temperature compensation. It supports all lead-acid battery types (100-2000 CCA) and includes 8 safety protections, making it an essential tool for professionals and enthusiasts who demand reliable battery performance and longevity.

## Description

Buy KONNWEI 3 in 1 Car Battery Charger, KW510 Battery Tester 12V 5-Amp Fully Automatic Smart Charger Automotive Pulse Repair Maintainer, Trickle Charger Battery Desulfator w/Temp Compensation: Battery Chargers - desertcart.com ✓ FREE DELIVERY possible on eligible purchases

Review: Great Device - ****UPDATE*** This charger saved me already around $45.00 My lawnmower tractor battery was completely dead and upon checking / testing the recommendation was to replace it due to bad cell. Then I remained myself that I had purchased Konnwei which was sitting in a trunk of my car.,,,to my surprise this little device repaired bad cell and recharged the battery in less than 5 hours. It already paid for itself !!!!! and tractor starts instantly..... THANKS AGAIN ..... Needed the AGM battery charger/maintainer because my old charger is only good for regular acid batteries. Glad I found KW 510- it is a tester as well. I tested few different vehicle batteries and their charging systems. One battery needed re-charging, which was no problem for this device. Tested again and although voltage is there cranking amps are well below (367 out of 800). I left the charger ON for Trickle/charging/maintaining, to my surprise I am able to start it OK even thought CA are less than half of new working battery. Repair feature did not help resolve the issue, well battery is 5 years old but rarely used-that is what most likely killed it as well. When I get new one I will leave it connected so it can be gently maintained/trickled with very low amps. Time will show how the unit performs, but as of now I am happy and can recommend it.
Review: Great little device, but does not work miracles. - Great value for the money. Charge and battery analysis test functions work great. The unit is rugged and easy to use. Now let's talk about the battery re-conditioner function. Same technology as most other units on the market, but warning - this will not perform miracles on old, dead-dead batteries. For relatively decent shape batteries reconditioning helps. When tested on a severely damaged (heavily sulfated) battery, they are most likely too far gone for this (or any similar unit) to make like-new again. In other words, worth buying but keep your expectations in balance.

## Features

- 【All-in-one Battery Charger】KONNWEI KW510 is a professional 3 in 1 battery tester, battery charger, battery maintainer(pulse repair), trickle charger and battery desulfator. The large color LCD display and button-operated features will be more convenient compared to other similar products. Perfect Gift for holidays!
- 【Accurate Battery Tester】running for years but no idea about battery status? KW510 12v battery tester provides you an overall analysis of battery health by checking its voltage charge, internal resistance then tells you whether the battery needs to be recharged. Also this battery tester runs cranking and charging system test and car alternator tester charging.
- 【Fully Automatic Battery Charger】charge batteries as low as 2-volt, max output 12-volt 5-amp. KW510 battery charger not only helps you charge the batteries but also adapts the newest pulse repair technology, one-click repair and automatically detects battery sulfation and acid stratification to bring the batteries back to life and restore their performance.
- 【Universal Compatible】KW510 can test, charge and repair all 12-volt 100-2000CCA lead-acid batteries including regular flooded, AGM flat plate, AGM spiral, or gel batteries. The perfect automotive battery tester to diagnose the batteries of cars, boats, lawnmowers, etc.
- 【Highest Safety Priority】safety charging is the most important thing! Except the smart temp compensation that fits all climates and auto change to low current mode after fully charged, KW510 also supports up to 8 kinds of protection like reverse polarity, overload, over-current, overheat, cooling system, fireproof material, short circuit protection, etc.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B08N52DKC9 |
| Amperage | 5 Amps |
| Best Sellers Rank | #171,415 in Automotive ( See Top 100 in Automotive ) #706 in Battery Chargers |
| Brand | KONNWEI |
| Color | Yellow |
| Customer Reviews | 4.3 4.3 out of 5 stars (733) |
| Date First Available | February 4, 2021 |
| Item Weight | 1.43 pounds |
| Item dimensions L x W x H | 6.3 x 3.7 x 2.4 inches |
| Item model number | KW510 |
| Manufacturer | KONNWEI |
| Manufacturer Part Number | KW510 |
| Measurement Type | Voltmeter, Ohmmeter |
| Min. Operating Voltage | 12 Volts |
| Model | KW510 |
| Power Source | Battery Powered |
| Product Dimensions | 6.3 x 3.7 x 2.4 inches |
| UPC | 657419949613 657419949682 |

## Product Details

- **Brand:** KONNWEI
- **Color:** Yellow
- **Item Weight:** 1.43 Pounds
- **Item dimensions L x W x H:** 6.3 x 3.7 x 2.4 inches
- **Power Source:** Battery Powered

## Images

![KW510 Car Battery Charger - Image 1](https://m.media-amazon.com/images/I/61Ao8HNb+BL.jpg)

## Questions & Answers

**Q: Made in China?**
A: Yessir

**Q: What is the recommended number of hours to repair a deep cycle battery?**
A: It's based on your battery's capacity, such as AH. if the deep cycle battery's AH is 50AH. the KW510 maximum output will be 5A, and it will take 10 hours for recommended charging time. AH= A * Time

**Q: Is it a portable charger?**
A: Yes, KW510 is a portable charger, the smart charger's Dimensions: 6.3” x 3.7” x 2.4”
Item Weight: 1.43 pounds

**Q: Anyone know of a charger with all the features of this that also actually "maintains"? This one doesn't. The longest you can charge is 48 hours max**
A: I was an auto trickel changer.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great Device
*by D***D on April 2, 2021*

****UPDATE*** This charger saved me already around $45.00 My lawnmower tractor battery was completely dead and upon checking / testing the recommendation was to replace it due to bad cell. Then I remained myself that I had purchased Konnwei which was sitting in a trunk of my car.,,,to my surprise this little device repaired bad cell and recharged the battery in less than 5 hours. It already paid for itself !!!!! and tractor starts instantly..... THANKS AGAIN ..... Needed the AGM battery charger/maintainer because my old charger is only good for regular acid batteries. Glad I found KW 510- it is a tester as well. I tested few different vehicle batteries and their charging systems. One battery needed re-charging, which was no problem for this device. Tested again and although voltage is there cranking amps are well below (367 out of 800). I left the charger ON for Trickle/charging/maintaining, to my surprise I am able to start it OK even thought CA are less than half of new working battery. Repair feature did not help resolve the issue, well battery is 5 years old but rarely used-that is what most likely killed it as well. When I get new one I will leave it connected so it can be gently maintained/trickled with very low amps. Time will show how the unit performs, but as of now I am happy and can recommend it.

### ⭐⭐⭐⭐⭐ Great little device, but does not work miracles.
*by S***P on May 11, 2021*

Great value for the money. Charge and battery analysis test functions work great. The unit is rugged and easy to use. Now let's talk about the battery re-conditioner function. Same technology as most other units on the market, but warning - this will not perform miracles on old, dead-dead batteries. For relatively decent shape batteries reconditioning helps. When tested on a severely damaged (heavily sulfated) battery, they are most likely too far gone for this (or any similar unit) to make like-new again. In other words, worth buying but keep your expectations in balance.

### ⭐⭐⭐⭐ Good Product
*by J***. on January 4, 2026*

Recently received this and was able to try it on 3 different batteries. The results for each of the 3 batteries made sense. It has all the features I was after in a single unit. It was very reasonably priced, and I hope it holds up. While the directions overall were very good and clear, except for lack of explanation as to how long the Repair feature takes. I had to Google that and find that it can take 8 hours or more to complete and the unit doesn't give any indication it might take that long.

## Frequently Bought Together

- KONNWEI 3 in 1 Battery Charger, Car Battery Tester KW510 12V 5-Amp Fully Automatic Smart Charger Automotive Pulse Repair Maintainer, Trickle Charger Battery Desulfator w/Temp Compensation
- NOCO GENIUS1, 1-Amp Fully-Automatic Smart Charger, 6V and 12V Portable Battery Charger, Battery Maintainer, Trickle Charger, and Battery Desulfator with Temperature Compensation

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*Product available on Desertcart Hong Kong*
*Store origin: HK*
*Last updated: 2026-03-08*