GOOLOO
GOOLOO GP4000 Jump Starter
$84.99
Released 2023
Best Car Jump Starters · head-to-head
GOOLOO GP4000 Jump Starter vs Schumacher SL1639 Lithium Jump Starter
A sourced, side-by-side comparison. Schumacher SL1639 Lithium Jump Starter is cheaper at $75.51. Every spec and price links to its source.
Schumacher
Schumacher SL1639 Lithium Jump Starter
$75.51Cheaper
Released 2022
Which is better: the GOOLOO GP4000 Jump Starter or Schumacher SL1639 Lithium Jump Starter?
The Schumacher SL1639 Lithium Jump Starter wins 1 of the 1 specs we compare head to head; the other wins 0. The Schumacher SL1639 Lithium Jump Starter is the cheaper at $75.51. The Schumacher SL1639 Lithium Jump Starter both leads on specs and costs less — the straightforward pick.
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Full spec sheet
✓ marks the stronger figure where "more" — or "less", for price and weight — is unambiguously better.
| Spec | GOOLOO GP4000 Jump Starter | Schumacher SL1639 Lithium Jump Starter |
|---|---|---|
| US price | $84.99 | $75.51 |
| Brand | GOOLOO | Schumacher |
| Released | 2023 | 2022 |
| Msrp usd | 189.99 | — |
| Peak amps | 4000 | 1000 |
| Battery capacity (mAh) | 24000 | — |
| Max gas engine liters | — | 8 |
| Max diesel engine liters | 10 | 6 |
| Jump starts per charge | 60 | 30 |
| USB c output watts | 15 | — |
| Has air compressor | No | No |
| LED lumens | — | — |
| IP rating | — | — |
| Weight (lb) | 1.81 | 1.6 |
| Warranty years | — | 1 |
Sources — GOOLOO GP4000 Jump Starter: us.gooloo.com (verified 2026-06-23). Schumacher SL1639 Lithium Jump Starter: schumacherelectric.com (verified 2026-06-23).
What's the difference between the GOOLOO GP4000 Jump Starter and Schumacher SL1639 Lithium Jump Starter?
Where the two actually differ on the specs we track (4 of 12). Matching specs are omitted.
- Peak amps: GOOLOO GP4000 Jump Starter 4000 vs Schumacher SL1639 Lithium Jump Starter 1000
- Max diesel engine liters: GOOLOO GP4000 Jump Starter 10 vs Schumacher SL1639 Lithium Jump Starter 6
- Jump starts per charge: GOOLOO GP4000 Jump Starter 60 vs Schumacher SL1639 Lithium Jump Starter 30
- Weight (lb): GOOLOO GP4000 Jump Starter 1.81 vs Schumacher SL1639 Lithium Jump Starter 1.6