TOPDC BT-501 500 Amp

Last updated: November 9, 2026

TOPDC BT-501 500 Amp

3.1/5#4 of 7 in load testers battery testers
3.1

An adjustable 500 A carbon-pile tester with a built-in test timer, for car, truck and farm batteries.

Carbon pileType
up to 1,000 CCARange
12 VSystems
ChargingSystem tests

Check price at Amazon$135.99

Price checked November 9, 2026. As an Amazon Associate we earn from qualifying purchases.

Pros

Adjustable load up to 500 A for batteries to 1,000 CCA
Beeps at the end of the 15-second test so you don’t over-load the battery
Temperature-compensated pass or fail chart on the face

Cons

Listing publishes no warranty term

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.

Price $135.9957
Battery coverage up to 1,000 CCA, 6 V batteries37
System tests tests the charging system40
Features or load 500 A load70
Warranty warranty not published, scored as none0

Specifications

Testing
Model number	BT-501
Type	Carbon pile
Battery voltages	6/12 V
System voltages	12 V
Rating range	up to 1,000 CCA
Load current	500 A
Charging system test	Yes
Features
Display	Analog

Alternatives in this type

FJC 45115 500 Amp

#2 in Load testers3.3Full review

A plain 500 A carbon-pile tester for 12 V batteries up to 1,000 CCA at a lower price than the Solar 1874.

$115.20

Carbon pileup to 1,000 CCA

Clore Solar 1874 500 Amp

#3 in Load testers3.2Full review

A proper adjustable carbon-pile tester for car and light-truck batteries, from a long-standing shop brand.

$131.88

Carbon pileup to 1,000 CCA

Schumacher BT-100

#5 in Load testers3.1Full review

A classic, low-cost load tester for checking 6 V and 12 V batteries under a real load.

$54.99

Fixed load6/12 V

Compare

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