Clore Solar 1874 500 Amp
#3 in Load testersFull review
A proper adjustable carbon-pile tester for car and light-truck batteries, from a long-standing shop brand.
Amazon $131.88$131.88
The Clore Solar 1874 500 Amp is the better car battery tester overall, rated 3.2 to 3.1. The Clore Solar 1874 500 Amp leads on system tests. The TOPDC BT-501 500 Amp wins on battery coverage. The Clore Solar 1874 500 Amp costs $4.11 less ($131.88 vs $135.99).
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 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
Which should you buy?
- Choose the Clore Solar 1874 500 Amp for system tests (tests the starter, charging system vs tests the charging system).
- Choose the TOPDC BT-501 500 Amp for battery coverage (up to 1,000 CCA, 6 V batteries vs up to 1,000 CCA).
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every load testers car battery tester; a clear win is highlighted. How we rank explains each one.
| Factor weight | Clore Solar 1874 500 Amp | TOPDC BT-501 500 Amp |
|---|---|---|
| Overall rating | 3.2/5 | 3.1/5 |
| Price 25% | 58 $131.88 | 57 $135.99 |
| Battery coverage 25% | 17 up to 1,000 CCA | 37 up to 1,000 CCA, 6 V batteries |
| System tests 20% | 80 tests the starter, charging system | 40 tests the charging system |
| Features or load 20% | 70 500 A load | 70 500 A load |
| Warranty 10% | 0 warranty not published, scored as none | 0 warranty not published, scored as none |
Specifications
| Clore Solar 1874 500 Amp | TOPDC BT-501 500 Amp | |
|---|---|---|
| Testing | ||
| Type | Carbon pile | Carbon pile |
| Battery voltages | - | 6/12 V |
| System voltages | - | 12 V |
| Rating range | up to 1,000 CCA | up to 1,000 CCA |
| Load current | 500 A | 500 A |
| Starter test | Yes | - |
| Charging system test | Yes | Yes |
| Features | ||
| Display | Analog | Analog |