# TOPDON BT100-UK 12V Car Battery Tester, 100–2000 CCA

The TOPDON BT100-UK is a 12V battery tester for checking battery health, engine cranking and charging-system performance. Its three test functions and support for several lead-acid battery types make it suited to routine checks, while its claimed 100–2000 CCA range is a listing specification rather than an independent measurement.

- [Original product page](https://bargainpostbox.co.uk/product/topdon-bt100-uk-12v-car-battery-tester)
- [View offer](https://bargainpostbox.co.uk/visit/topdon-bt100-uk-12v-car-battery-tester)
- Market: UK
- Language: en-GB
- Currency: GBP
- Brand: TOPDON
- Model: BT100-UK
- Category: Cars & Motorcycles > Vehicle Diagnostic Equipment
- Price: 36.79 GBP
- Previous price: 45.99 GBP
- Discount: 20%
- Price checked: 2026-11-12T14:39:35.049Z
- Rating: 4.5 / 5
- Reviews: 3219

Prices and deal status are the latest recorded data, not a guarantee of availability. Confirm the price and availability with the store.

## At a glance

- Runs three checks: battery health, cranking and charging-system performance.
- The listing specifies compatibility with regular flooded, AGM flat plate/spiral, EFB and GEL lead-acid batteries.
- Three-colour LEDs and menu-driven operation are intended to make results easier to interpret.
- The listing describes reverse-polarity protection and sparkproof copper clamps. It is a tester, not a battery charger.

## Pros

- Combines battery condition, cranking and charging-system checks in one device.
- Reports SOH, SOC, voltage, current and a battery rating, according to the listing.
- The listed battery types and vehicle applications extend beyond ordinary passenger cars.

## Cons

- The stated 12V scope does not cover vehicles that require a 24V battery tester.

## Specifications

### Identity
- Brand: TOPDON
- Model: BT100-UK
### Power and battery
- Power configuration: Battery Powered
### Dimensions
- Dimensions listed: 13.7 x 7.6 x 23 centimetres
### Testing and compatibility
- Rated battery range: 12V 100-2000CCA
- Supported battery types: regular flooded, AGM flat plate/spiral, EFB, and GEL
- Test functions: health test, cranking test, and charging systems test
- Displayed results: SOH, SOC, voltage, current, and rating
### Construction and operating limits
- Colour: Black Blue
- Minimum operating voltage: 9 Volts
- Maximum operating voltage: 18 Volts
- Upper temperature rating: 65 Degrees Celsius
- Measurement type: Voltmeter
- Listed compliance: CE, FCC, RoHS, UKCA
### Other listing details
- Guarantee: 24 month guarantee

## Before you buy

- Compatibility, measurement accuracy, safety features and performance are manufacturer or listing claims, not independently established results. Confirm the battery type and procedure in the manual before testing.

## In the box

- BT100 vehicle battery tester (Included)
- User manual (Included)

## A good fit for

- DIY vehicle owners who want to assess a 12V lead-acid battery and check cranking and charging systems.
- Garages or workshops that regularly test compatible batteries in cars, motorcycles, trucks, RVs, ATVs, boats or other listed vehicles.

## Less suited to

- People needing a tester for 24V systems or batteries outside the listed lead-acid types.
- Buyers looking for a battery charger, jump starter or full vehicle diagnostic scanner.

## Customer feedback

Customer feedback describes the tester as easy to navigate, clear to read and useful for battery, cranking and charging checks, with some customers reporting precise readings. Those impressions are relevant to the listed three-test design, but they do not independently verify accuracy. Battery life feedback is mixed, so buyers should not assume consistent long-term battery performance from the reports.
- Positive themes: Customers describe the controls as easy to navigate and the display as clear.
- Positive themes: Customer feedback includes positive reports about functionality and battery readings.
- Mixed feedback: Battery life receives mixed feedback, with some customers reporting months of use and others saying it does not last long.

## Frequently asked questions

### What does the BT100 test?
The listing describes battery health, cranking and charging-system tests. It says results include SOH, SOC, voltage, current and a rating.
### Which batteries does it support?
The listing names regular flooded, AGM flat plate/spiral, EFB and GEL lead-acid batteries. Check the manual for the right procedure for your battery.
### Can it test 24V batteries?
The supplied title identifies this as a 12V tester. Do not assume it supports 24V systems.
### Does it charge or jump-start a battery?
No such function is listed. The described functions are tests, not charging or jump-starting.

## Alternative options

- [TOPDON Car Battery Tester 12V BT50, Auto 100-2000 CCA Battery Load Tester \| Battery Health/Cranking/Charging Test, Auto Test Scan Tool, Digital Battery Alternator Analyzer, Reverse Polarity Protection](https://bargainpostbox.co.uk/visit/topdon-bt100-uk-12v-car-battery-tester)
- [TOPDON BT100 Car Battery Tester 12V Load Tester, 100-2000 CCA \| Auto Battery Tester for Starting and Charging Systems, Digital Analyzer for Car, Truck, Moto, ATV, SUV, Boat, and Yacht](https://bargainpostbox.co.uk/visit/topdon-bt100-uk-12v-car-battery-tester)
- [Car Battery Tester 12V 24V, TOPDON BT200 Car Battery Tester 100-2000CCA \| Digital Car Battery Analyzer for Vehicles, Charging Cranking System Tester for Car Truck Motorcycle ATV SUV Boat Yacht](https://bargainpostbox.co.uk/visit/topdon-bt200-12v-24v-battery-tester)
- [TOPDON BT600 Car Battery Tester 12V/24V, 3.5" Color Screen with Printer \| Professional Grade 12V Battery Test, 12V/24V Cranking/Charging Test, 100-2000 CCA, 5.9ft Cable, Software Update & Review Data](https://bargainpostbox.co.uk/visit/topdon-bt600-uk-car-battery-tester-printer)
- [MOTOPOWER 12V Digital Battery Tester Voltmeter and Alternator Charging System Analyzer with LCD Display and LED Indication, Black Rubber Paint](https://bargainpostbox.co.uk/visit/topdon-bt100-uk-12v-car-battery-tester)
- [ANCEL BA101 Car Battery Tester 12V Auto 100-2000 CCA Battery Load Tester \| Automotive Alternator Battery Analyzer Digital on Cranking Charging System, for Motorcycle, Truck, Boat, RV, Marine & More](https://bargainpostbox.co.uk/visit/ancel-ba101-12v-car-battery-tester)
- [TOPDON BT600 Plus Car Battery Tester, Battery Analyzer 6V/12V/24V \| 12V/24V Cranking/Charging/System Tests, Resistance and Sequence Tests, 3.5" Screen with Built-in Battery and Printe](https://bargainpostbox.co.uk/visit/topdon-bt100-uk-12v-car-battery-tester)
- [TOPDON Car Battery Tester BT200-A, 12V/24V Battery Analyzer 100-2000CCA \| with Battery Cranking Charging Tests, Date Review, 2.4" Color Screen for Cars Motorcycles Boats SUVs Truck, for Pros & DIYers](https://bargainpostbox.co.uk/visit/topdon-bt100-uk-12v-car-battery-tester)
- [Car Battery Tester 12V 24V, TOPDON BT300P Battery Tester with Printer \| 100-2000CCA Automotive Battery Load Tester with Cranking Charging System Test for Car/RV/SUV/Motorcycle/Truck/Boat](https://bargainpostbox.co.uk/visit/topdon-bt100-uk-12v-car-battery-tester)
- [TOPDON AD800BT 2.0 Car Diagnostic Tool Bidirectional, Lifetime Free Update \| All Systems Diagnosis OBD2 Scanner with 28+ Reset Services, Oil Reset/EPB/SAS/TPMS/DPF, FCA AutoAuth, CANFD](https://bargainpostbox.co.uk/visit/topdon-ad800bt-2-0-bidirectional-car-diagnostic-tool)
- [MOTOPOWER MP0514B 12V Digital Battery Tester Voltmeter and Alternator Charging System Analyzer with LCD Display and LED Indication - Blue Rubber Paint](https://bargainpostbox.co.uk/visit/topdon-bt100-uk-12v-car-battery-tester)
- [Car Battery Tester 12V 24V Load Tester,KINGBOLEN BM550 PLUS 100-2000 CCA Charging Cranking System Tester, Accurate Voltage Waveform Digital Auto Battery Analyzer for Cars Trucks SUV Motorcycle](https://bargainpostbox.co.uk/visit/topdon-bt100-uk-12v-car-battery-tester)

## Add-ons

- [NOCO Boost GB40 1000A Jump Starter Power Pack - 6.0L Petrol & 3.0L Diesel \| UltraSafe: Spark-Proof & Reverse Polarity Protect](https://bargainpostbox.co.uk/visit/topdon-bt100-uk-12v-car-battery-tester)
- [TOPDON CarPal A Obd2 Scanner Bluetooth, Full System Car Diagnostic Tool \| 6 Reset, AutoVIN, Vehicle Health Check, Smog Check,](https://bargainpostbox.co.uk/visit/topdon-carpal-a-bluetooth-obd2-diagnostic-scanner)

## Images

![TOPDON BT100-UK 12V Car Battery Tester, 100–2000 CCA — 1](https://bargainpostbox.co.uk/i/rF3uFBaIOYpaE6vZM-q3xhEDA2B7SqMVM7wwKhE8-NuVLV_05T3yJAKSk0hSwyhOHZcCPxpHhRtiIpTMZkLN4P-EVIOYABhG5w-7A3rjvzYt42K50tIQ.jpg)

![TOPDON BT100-UK 12V Car Battery Tester, 100–2000 CCA — 2](https://bargainpostbox.co.uk/i/lx8EF1EjekQeRz3glP1HefkWFXUraKo7UVDS-mzWzduDgpURLKZlhyVF13_VMIv_uqyNKHlInRDJThFdmYgIK6BV52lIaD9e9nEkHHKG-8e5DzQD599n.jpg)

![TOPDON BT100-UK 12V Car Battery Tester, 100–2000 CCA — 3](https://bargainpostbox.co.uk/i/QOcoMDJjMiQTT9kQgzDvbhHqaA_lFXbDjGKWopbc1AD4R159Tb4LtCuyseQcBKTXLxyEg9Npk7qrSBunCov7eMLPE_UAu2_w0-t9Y7649oTMFHW6KjaX.jpg)

![TOPDON BT100-UK 12V Car Battery Tester, 100–2000 CCA — 4](https://bargainpostbox.co.uk/i/SfTQww-yd0Gx5v89IYPZf83zCDsDGafQUFfK2rRdQnWiiP3O3zMzsJKiy4syHnXXIIUBloCy2XV6QbJLhXnAVF-uQnwTVb0KsWyHSpikQQ8hT7Lk5FgJ.jpg)

![TOPDON BT100-UK 12V Car Battery Tester, 100–2000 CCA — 5](https://bargainpostbox.co.uk/i/c1jJ0P5LRcYV5inIfn5FYyby8mAQ3qn0cmzIsC6OnUUfViWYTxlXl6z4_RG_Uhv9wEXFPKawYT9oi4Ukwi2XXtP9eJFAxEa0GjSKl76TeQtIxHCFqUmE.jpg)

![TOPDON BT100-UK 12V Car Battery Tester, 100–2000 CCA — 6](https://bargainpostbox.co.uk/i/3tnnGGTt8lEyK6x9A_6Yj3VpJB9nJw2ViU5n6joK9bFcF1ywCngMH2zNBuoNaQjHtaSiIfsWFCUQCdyID7ybkel3Ta_UPySTc3bv3VHDDl40w4gvAyqS.jpg)

![TOPDON BT100-UK 12V Car Battery Tester, 100–2000 CCA — 7](https://bargainpostbox.co.uk/i/aAIB2bqT6zDP4dhwCU_ncZMFudSEd9paIH_PzLdo3nVb4vQ-4UvhfQBpch77Oy2DOPgrj2lhzKtQhfgcWzCb4QbGYnsdm84kLlCOFwUNkE4vxELgjNEv.jpg)