# Battery Tester KONNWEI KW650 12V/24V with LCD display, automotive and truck diagnostic tool

**URL:** https://aio.lv/en/product--konnwei-kw650--10734517
**Data updated:** 2026-01-06 12:42 (EET)
**Category:** Miscellaneous repair tools
**Manufacturer:** KONNWEI
**Manufacturer code:** KW650
**EAN:** 310000173850
**Warranty:** 2 Years
**Availability:** Out of stock

## Summary description

KONNWEI KW650 is a handheld battery tester for 12V and 24V systems with an LCD display. It evaluates battery voltage, state of charge and starting capability, and performs alternator/charging system checks. Designed for cars and trucks, it provides quick diagnostics, clear readings on the screen and simple clamp connection for maintenance and workshop use.

## Long description

KONNWEI KW650 is a handheld battery tester for 12V and 24V vehicle electrical systems. The unit uses clamp-type connectors and an LCD display to measure battery voltage, estimate state of charge and assess starting capability. It also includes an alternator and charging system check to help identify weak batteries or charging faults in cars and trucks. The compact handheld form makes the KW650 suitable for routine maintenance, workshop use and quick on-vehicle diagnostics.
Advantages
The KONNWEI KW650 gives direct voltage readings on an easy-to-read LCD and provides an estimate of the battery's state of charge. It supports both 12V and 24V systems and offers a starting capability test plus an alternator/charging system check. Simple clamp connections allow quick attachment to battery terminals without disassembly, enabling rapid on-vehicle diagnostics for maintenance and basic troubleshooting.
Suitable for
12V passenger cars
24V commercial vehicles and trucks
Vehicle maintenance and workshop checks
Quick on-vehicle battery and charging system diagnostics
Key specifications
Brand: KONNWEI
Model / MPN: KW650
EAN: 310000173850
Supported systems: 12V and 24V
Display: LCD
Functions: battery voltage, state of charge estimate, starting capability test, alternator/charging system check
Connection: clamp-type battery connectors
Form factor: handheld diagnostic tool
How to use
Ensure the vehicle ignition is off and inspect the tester clamps before use. Attach the red clamp to the battery positive terminal and the black clamp to the negative terminal. Power on the KW650 and select the appropriate system voltage if required. Read the displayed battery voltage and follow on-screen indications for state of charge and starting capability. To test the alternator or charging system, run the engine at idle or a slightly elevated RPM and use the alternator/charging check mode while observing the displayed results. After testing, disconnect the clamps and store the tester in a dry place.
Usage recommendations
Use the KONNWEI KW650 in well-ventilated areas and follow standard safety precautions when working with vehicle batteries: wear eye protection, avoid sparks near the battery, and ensure correct clamp polarity. For unclear or critical faults, confirm findings with a workshop-grade diagnostic tool or professional service.

## FAQ

### What payment options are available?

AiO.lv offers several payment methods: Bank transfer. All transactions are 100% secure and encrypted.

### Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

### What is the warranty period?

All KONNWEI products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized KONNWEI service centers and through AiO.lv

### Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

### Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. More information about warranty service: https://aio.lv/en/warranty

## Image

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