Clore Solar 1876 1000 Amp
#1 in Load testersFull review
A full-size carbon-pile tester for shops and fleets that load-test heavy-duty and 24 V batteries.
Amazon $284.84$284.84
The Clore Solar 1876 1000 Amp is the better car battery tester overall, rated 3.8 to 3.1. The Clore Solar 1876 1000 Amp leads on battery coverage, system tests and features or load. The TOPDC BT-501 500 Amp wins on price. The TOPDC BT-501 500 Amp costs $148.85 less ($135.99 vs $284.84).
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 1876 1000 Amp for battery coverage (up to 2,000 CCA, 6 V batteries, 24 V systems vs up to 1,000 CCA, 6 V batteries), system tests (tests the starter, charging system vs tests the charging system) and features or load (1,000 A load vs 500 A load).
- Choose the TOPDC BT-501 500 Amp for price ($135.99 vs $284.84).
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 1876 1000 Amp | TOPDC BT-501 500 Amp |
|---|---|---|
| Overall rating | 3.8/5 | 3.1/5 |
| Price 25% | 24 $284.84 | 57 $135.99 |
| Battery coverage 25% | 100 up to 2,000 CCA, 6 V batteries, 24 V systems | 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% | 100 1,000 A load | 70 500 A load |
| Warranty 10% | 0 1-year warranty | 0 warranty not published, scored as none |
Specifications
| Clore Solar 1876 1000 Amp | TOPDC BT-501 500 Amp | |
|---|---|---|
| Testing | ||
| Type | Carbon pile | Carbon pile |
| Battery voltages | 6/12/24 V | 6/12 V |
| System voltages | 6/12/24 V | 12 V |
| Rating range | up to 2,000 CCA | up to 1,000 CCA |
| Load current | 1,000 A | 500 A |
| Starter test | Yes | - |
| Charging system test | Yes | Yes |
| Features | ||
| Display | Analog | Analog |
| Cable length | 4.7 ft | - |
| Build | ||
| Warranty | 1 year | - |