---
product_id: 45831262
title: "C4 LCD Display Speedy Universal Smart Battery Charger,Battery Capacity Analyzer for Rechargeable Batteries, aa Battery Charger, 18650 Battery Charger"
brand: "zanflare"
price: "¥13390"
currency: JPY
in_stock: true
reviews_count: 13
category: "Zanflare"
url: https://www.desertcart.jp/products/45831262-c4-lcd-display-speedy-universal-smart-battery-charger-battery-capacity
store_origin: JP
region: Japan
---

# Up to 2A charging current per slot LCD shows voltage, current, capacity & resistance 4 independent charging slots C4 LCD Display Speedy Universal Smart Battery Charger,Battery Capacity Analyzer for Rechargeable Batteries, aa Battery Charger, 18650 Battery Charger

**Brand:** zanflare
**Price:** ¥13390
**Availability:** ✅ In Stock

## Summary

> ⚡ Charge smarter, test deeper, power further — all in one sleek device!

## Quick Answers

- **What is this?** C4 LCD Display Speedy Universal Smart Battery Charger,Battery Capacity Analyzer for Rechargeable Batteries, aa Battery Charger, 18650 Battery Charger by zanflare
- **How much does it cost?** ¥13390 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/45831262-c4-lcd-display-speedy-universal-smart-battery-charger-battery-capacity)

## Best For

- zanflare enthusiasts

## Why This Product

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

## Key Features

- • **Smart LCD Monitoring:** Real-time display of voltage, current, capacity & internal resistance for each battery
- • **Universal Compatibility:** Charges AA, 18650, NiMH & lithium batteries effortlessly
- • **Power Bank Functionality:** 5V/2A USB output lets you power devices on the go using inserted batteries
- • **Compact & Certified Safety:** UL, PSE, FCC & RoHS certified with flame-retardant materials for peace of mind
- • **Multi-Mode Charging & Testing:** Choose from Charge, Fast Test, and Normal Test modes independently per slot

## Overview

The Zanflare C4 is a versatile smart battery charger and analyzer featuring 4 independent slots with up to 2A charging current each. Its integrated LCD provides detailed real-time data on voltage, current, capacity, and internal resistance, empowering professionals to maintain and optimize rechargeable batteries including AA, 18650, NiMH, and lithium types. Certified for safety and built with flame-retardant materials, it also doubles as a 5V/2A power bank via USB output. Compact yet powerful, the C4 offers multi-mode charging and testing options, making it an essential tool for tech-savvy users who demand precision and reliability.

## Description

Buy Zanflare C4 LCD Display Speedy Universal Smart Battery Charger,Battery Capacity Analyzer for Rechargeable Batteries, aa Battery Charger, 18650 Battery Charger: Battery Chargers - desertcart.com ✓ FREE DELIVERY possible on eligible purchases

Review: Excellent quality product with many easy to use features - Great charger. This works better than I thought it would and has features typically only available on more expensive chargers. The charger is easy to use and provides more information than a typical user would need. Excellent product for maintaining, charging, and seeing how much life you have left in your rechargeable batteries. Overall excellent quality product.
Review: This Smart Charger / Analyzer keeps up with the big boys. - What can I say about the Zanflare C4 Smart Charger / Analyzer? I had mediocre hopes for the C4, assuming it wouldn't live up to its featured hype. But I am happy to say that it has thus far exceeded my expectations. I have lots of NiMh and LiIon batteries. LOTS, over 300. I also have 5 different smart chargers, and a slew of others. So my perspective comes from a comparison of things I already possess and use. My favorite Smart Charger / Analyzer up to this point was the Opus BT-C3400. So most of my perspective is related to that one. The ease of use and setting individual slot configurations is even nicer than the C3400. Additionally, like the C3400 you can set / reset the configuration of each individual slot "on-the-fly" with immediate response. The only feature the C4 doesn't have where the C3400 does is an automated REFRESH mode. Instead, you either manually use the Fast Test (discharge / charge [measure mAh on charge cycle]) or Normal Test (charge / discharge / charge [measure mAh on discharge cycle]) and simply do it manually 3 times to get the same process the Opus performs with its Discharge Refresh program. Sometimes it might be a hassle, other times it is nice to check the value between each cycle to see what kind of results you get at each point. What I've found is that when I need to refresh some old batteries, or ones that have not been used in awhile, where they seem to have lost some of their capacity, I can use the C3400 refresh and then "set it and forget it" until it is done. On the other hand, when I purchase new batteries, I find that if I use the C4 Fast Test manually, I might not need to do a full 3 cycle test to break them in. If the capacity is within 10% of the battery's rating, I then do the Normal test which provides the capacity from the "discharge" perspective (more accurate in my opinion), record my info and move on to the next set of batteries. The C4's display uses a white on blue background so is slightly less appealing than the C3400's LCD display, but is by no means difficult to read. In fact the C4 has a "virtual" battery that is always visible for each slot giving a nice and easy visual status without having to try and "read" something and without having to cycle through the "modes". Though you can cycle the modes just like the C3400 to indicate Voltage, mA charge rate, mAh capacity rate, Internal Resistance, etc. But that visual battery indicating a visual status is also always there, so you know "visually" about how close it is to being done with the discharge or charge state. Effect: I can look at it from across the room and just "know". The C4 appears to have good ventilation much like the C3400. It is a couple inches longer than the C3400, but it really doesn't require much more desk space as in either case you would want to have a bit of ventilation room anyway. I've used the unit on the major battery types (AAA, AA, 14500, 18650, 26650) and used the various current settings (even up to 1A * 4 slots) and the unit itself doesn't over heat or get any warmer than any other charger I own. So the "physical" characteristics are pretty similar. The exception is probably in the slots themselves. Rather than have a multi-tiered slot design like the C3400 has, they chose to simply make the slot "half circle" diameter the size needed for its largest battery support. This tends to make the smaller (AA, AAA) batteries "rock and roll" a bit when trying to place them. It takes more effort in other words. Not a lot more, but enough to certainly realize that it does. The C3400's two tiered system favors AA batteries for the smaller tier as they fit *almost* snug in that bottom tier. The wider batteries fit into the 2nd (upper) tier pretty nicely. So the C4 is not quite as nice as the C3400 in that respect. Additionally, the metal sliders are a little "bendy" (read as weak) so you may have to occasionally bend them to a straight vertical position for proper contact with the negative pole on the battery. Not a major problem, but something they should look at fixing in the future. So that I don't write a novel, I'll simply summarize here with possibly adding comments in the future as they become necessary: The Zanflare C4, much like the Opus BT-C3400, appears to be a solid Smart Charger / Analyzer and performs well. Could there be improvements? Maybe. But nothing major here is needed. I'm thoroughly pleased so far with the Zanflare C4, and the fact it is less expensive than my C3400 is simply icing on the cake.

## Features

- Universal battery charger: Zanflare C4 smart battery charger complies with UL PSE FCC CE ROHS standards and uses intelligent circuits and flame-retardant materials. Can be used as a charger for batteries of different specifications: aa battery charger, 18650 battery charger, lithium battery charger, rechargeable battery charger, nimh battery charger, etc.
- LCD Display: provided with integrated LCD display to monitor the information of the four charging slots. Each battery parameter such as voltage (V), current (mA), time (h), capacity (mAh), internal resistance (mR) can be viewed independently by pressing the corresponding digital key. As battery charger aa tester, 18650 battery tester, tec.
- Power Bank: Zanflare C4 battery charger comes with 5V / 2A USB output function and can be used as a power bank. USB output function will be enabled only if you cut off the power and insert the battery; this does not apply to Ni-MH batteries.
- Multi Charge Option: 4 different charge current options to choose from. 4 slots work independently, you can select and use the three modes 'CHARGE, FAST TEST and NOR TEST' simultaneously. Zanflare C4 battery charger can test the battery capacity.
- What You Get: Zanflare C4 Smart Battery Charger, Power Adapter, Car Adapter, Instruction Manual with 1 year warranty, 30 Days Free Refund, 24 Hours Warm Service, full satisfaction and zero hassle returns guaranteed. If you encounter any product quality problems, feel free to contact us and we will answer your questions within 24 hours.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07428G1G2 |
| Amperage | 2 Amps |
| Brand | Zanflare |
| Color | Black |
| Current Rating | 2 Amps |
| Customer Reviews | 4.5 out of 5 stars 2,285 Reviews |
| Global Trade Identification Number | 00191438006457 |
| Input Voltage | 12 Volts |
| Item Dimensions D x W x H | 7.09"D x 3.94"W x 1.57"H |
| Item Weight | 9.6 ounces |
| Manufacturer | Zanflare |
| Mfr Part Number | C4 |
| Model Number | C4 |
| Number of Ports | 4 |
| Output Voltage | 5 Volts |
| Product Dimensions | 7.09"D x 3.94"W x 1.57"H |
| Specification Met | rohs,ul |
| UPC | 191438006457 |
| Unit Count | 1.0 Count |

## Product Details

- **Brand:** Zanflare
- **Color:** Black
- **Item Weight:** 9.6 ounces
- **Output Voltage:** 5 Volts
- **Product Dimensions:** 7.09"D x 3.94"W x 1.57"H

## Images

![C4 LCD Display Speedy Universal Smart Battery Charger,Battery Capacity Analyzer for Rechargeable Batteries, aa Battery Charger, 18650 Battery Charger - Image 1](https://m.media-amazon.com/images/I/71g9c3uGofL.jpg)

## Available Options

This product comes in different **Size** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Excellent quality product with many easy to use features
*by C***G on July 2, 2026*

Great charger. This works better than I thought it would and has features typically only available on more expensive chargers. The charger is easy to use and provides more information than a typical user would need. Excellent product for maintaining, charging, and seeing how much life you have left in your rechargeable batteries. Overall excellent quality product.

### ⭐⭐⭐⭐⭐ This Smart Charger / Analyzer keeps up with the big boys.
*by J***M on December 1, 2017*

What can I say about the Zanflare C4 Smart Charger / Analyzer? I had mediocre hopes for the C4, assuming it wouldn't live up to its featured hype. But I am happy to say that it has thus far exceeded my expectations. I have lots of NiMh and LiIon batteries. LOTS, over 300. I also have 5 different smart chargers, and a slew of others. So my perspective comes from a comparison of things I already possess and use. My favorite Smart Charger / Analyzer up to this point was the Opus BT-C3400. So most of my perspective is related to that one. The ease of use and setting individual slot configurations is even nicer than the C3400. Additionally, like the C3400 you can set / reset the configuration of each individual slot "on-the-fly" with immediate response. The only feature the C4 doesn't have where the C3400 does is an automated REFRESH mode. Instead, you either manually use the Fast Test (discharge / charge [measure mAh on charge cycle]) or Normal Test (charge / discharge / charge [measure mAh on discharge cycle]) and simply do it manually 3 times to get the same process the Opus performs with its Discharge Refresh program. Sometimes it might be a hassle, other times it is nice to check the value between each cycle to see what kind of results you get at each point. What I've found is that when I need to refresh some old batteries, or ones that have not been used in awhile, where they seem to have lost some of their capacity, I can use the C3400 refresh and then "set it and forget it" until it is done. On the other hand, when I purchase new batteries, I find that if I use the C4 Fast Test manually, I might not need to do a full 3 cycle test to break them in. If the capacity is within 10% of the battery's rating, I then do the Normal test which provides the capacity from the "discharge" perspective (more accurate in my opinion), record my info and move on to the next set of batteries. The C4's display uses a white on blue background so is slightly less appealing than the C3400's LCD display, but is by no means difficult to read. In fact the C4 has a "virtual" battery that is always visible for each slot giving a nice and easy visual status without having to try and "read" something and without having to cycle through the "modes". Though you can cycle the modes just like the C3400 to indicate Voltage, mA charge rate, mAh capacity rate, Internal Resistance, etc. But that visual battery indicating a visual status is also always there, so you know "visually" about how close it is to being done with the discharge or charge state. Effect: I can look at it from across the room and just "know". The C4 appears to have good ventilation much like the C3400. It is a couple inches longer than the C3400, but it really doesn't require much more desk space as in either case you would want to have a bit of ventilation room anyway. I've used the unit on the major battery types (AAA, AA, 14500, 18650, 26650) and used the various current settings (even up to 1A * 4 slots) and the unit itself doesn't over heat or get any warmer than any other charger I own. So the "physical" characteristics are pretty similar. The exception is probably in the slots themselves. Rather than have a multi-tiered slot design like the C3400 has, they chose to simply make the slot "half circle" diameter the size needed for its largest battery support. This tends to make the smaller (AA, AAA) batteries "rock and roll" a bit when trying to place them. It takes more effort in other words. Not a lot more, but enough to certainly realize that it does. The C3400's two tiered system favors AA batteries for the smaller tier as they fit *almost* snug in that bottom tier. The wider batteries fit into the 2nd (upper) tier pretty nicely. So the C4 is not quite as nice as the C3400 in that respect. Additionally, the metal sliders are a little "bendy" (read as weak) so you may have to occasionally bend them to a straight vertical position for proper contact with the negative pole on the battery. Not a major problem, but something they should look at fixing in the future. So that I don't write a novel, I'll simply summarize here with possibly adding comments in the future as they become necessary: The Zanflare C4, much like the Opus BT-C3400, appears to be a solid Smart Charger / Analyzer and performs well. Could there be improvements? Maybe. But nothing major here is needed. I'm thoroughly pleased so far with the Zanflare C4, and the fact it is less expensive than my C3400 is simply icing on the cake.

### ⭐⭐⭐⭐⭐ Excellent battery charger!!
*by D***J on August 2, 2022*

This is an excellent device! It's the best battery charger out there, in this price range...imo. I had a very basic charger before buying this; it basically charged the AA or AAA nimh batteries...nothing else. Plus, I could only charge either 2 or 4 batteries at a time. With this, I'm not limited. 1, 2, 3, or all 4 at a time. I finally NEEDED a charger that was more versatile & told me what I want to know about the the batteries. Well, this charger does it all really. It's great knowing the voltage, charging time, capacity, etc. No having to wonder about the status of the batteries you're charging! Very happy & impressed with this! Seems to be well built, & great quality. The display is very clear & easy to read too. I've been charging at 500 ma...& 300 ma, to be easier on the batteries. The default setting is 500 ma. I'm really into recharging my AA & AAA nimh batteries. Much better & really saves money. I was just tossing regular batteries in the trash can, which is wasteful in the long run. This is definitely the way to go! Thanks for making a great charger like this! Next, an upgrade on the battery tester I'm using. I know exactly the one I want too, from DIYlful. I included some photos. It really shows how consistent this charges. The Duracell did very well. I wasn't even aware they were 2500 maH. Nice.

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---

*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-07-19*