Car battery testers
Kingbolen BM550
The BM550 handles 6, 12 and 24 V batteries and shows state of health and state of charge in under two seconds.
- ✓6, 12 and 24 V batteries
- ✓State of health and state of charge
- ✓Internal resistance and charging test
- ✓Reverse polarity protection
- ✓Results in under 2 seconds
- Voltage
- 6 / 12 / 24 V
- Range
- 100–2,000 CCA
- Result
- < 2 s
- Capacity
- 2–220 Ah
Last updated
Right for you if…
You have vehicles on both 12 V and 24 V and want a simple, accurate tester.
Check before you buy
The battery’s CCA rating must be entered before the test. To follow the voltage in real time, see the BM550 Plus.
Specifications
| Voltage | 6, 12 and 24 V |
|---|---|
| Range | 100–2,000 CCA, 2–220 Ah |
| Measurements | SOH, SOC, internal resistance, charging |
| Screen | 1.8-inch HD |
| Safety | Reverse polarity protection |
Frequently asked questions
Does it work on a lorry?+
Yes, it handles 24 V batteries.
BM550 or BM550 Plus?+
The Plus adds an LED screen and a real-time voltage curve.
Do I need to disconnect the battery?+
No, the test can be done with the battery fitted or removed.
Kingbolen BM550
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In the same family
BM550 Plus
The BM550 Plus builds on the BM550 with an LED screen and a real-time voltage curve, so you can see a battery that sags when cranking.
- Voltage
- 6 / 12 / 24 V
- Range
- 100–2,000 CCA
BM520
The BM520 combines a 6, 12 and 24 V battery tester with a multimeter, and its clamps work either way round.
- Voltage
- 6 / 12 / 24 V
- Range
- 100–2,000 CCA