Topdon BT100
A low-cost 12 V tester for a car owner who wants to check a battery, starter and alternator at home.
Amazon $53.99$53.99
Conductance (digital)100-2,000 CCA12 V
2.9/5
A basic, low-cost 12 V tester from the maker of the Solar shop line, for cars with ordinary batteries.
- Conductance (digital)Type
- 40-1,200 CCARange
- 12 VSystems
Check price at Amazon$60.92
Price checked November 9, 2026. As an Amazon Associate we earn from qualifying purchases.
Pros
- Simple 12 V battery and system tester from an established shop-tool brand
- Reads small batteries from 40 CCA
Cons
- Tops out at 1,200 CCA, short of big truck batteries
- Listing does not detail its system tests
How it scores
The rating comes from 5 measured or published factors, each scored 0-100 against fixed reference points for its type. How we rank explains each one.
Specifications
| Model number | BA9 |
|---|---|
| Testing | |
| Type | Conductance (digital) |
| Battery voltages | 12 V |
| System voltages | 12 V |
| Rating range | 40-1,200 CCA |
| Battery types | Flooded, AGM, spiral, gel |
| Features | |
| Display | LCD |
| Build | |
| Warranty | 1 year |
Alternatives in this type
Foxwell BT301
A simple 12 V tester for home garages, with a long cable for running the starter test without a helper.
Amazon $69.99$69.99
Conductance (digital)100-2,000 CCA12 V
Midtronics PBT300
A professional-brand tester for buyers who want Midtronics conductance results, at a steep price for a 1,400 CCA range.
Amazon $378.99$378.99
Conductance (digital)100-1,400 CCA
Compare
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