TOPDC BT-501 500 Amp
#4 in Load testersFull review
An adjustable 500 A carbon-pile tester with a built-in test timer, for car, truck and farm batteries.
Amazon $135.99$135.99
Carbon pileup to 1,000 CCA12 V
1 TOPDC car battery tester ranked. Each one is scored and ranked against every brand in its type, so "#3 mid-size" means third of all mid-size battery testers here, not third among TOPDC's own.
The TOPDC BT-501 500 Amp is TOPDC's only current car battery tester here, ranked #4 of 7 load testers and rated 3.1.
Prices were last checked November 9, 2026. Product prices and availability are accurate as of that date and are subject to change; the price and availability shown on Amazon or the retailer's site at the time of purchase apply. As an Amazon Associate we earn from qualifying purchases.
TOPDC battery testers 1
- TOPDC BT-501 500 Amp#4 load testersFull review
An adjustable 500 A carbon-pile tester with a built-in test timer, for car, truck and farm batteries.
Amazon $135.99$135.99Carbon pileup to 1,000 CCA12 V