Identify the Anker before comparing it
The official reference matching the shortened name is Anker Roav Jump Starter Pro 1000A R3130, documented by Anker Japan. This analysis is limited to that version: specifications from 800 A Roav jump starters or other Anker devices are not transferred. Gooloo here means GT4000, not GT4000S. We have not physically tested them; documentation was reviewed on 3 November 2026.
More advertised amps do not mean four times better
The 1000 A and 4000 A figures are advertised maxima, not results from a common comparative test. Without equivalent measurement conditions we cannot turn them into a performance ratio. Start with vehicle compatibility, battery condition and intended conditions. A jump starter can help with a discharged battery; it does not itself fix the underlying reason for the discharge.
| Feature | Anker Jump Starter 1000A | Gooloo GT4000 |
|---|---|---|
| Reference | Roav R3130 Pro 1000A | GT4000; not GT4000S |
| Advertised peak current | 1000 A | 4000 A |
| Type of figure | Manufacturer maximum, not our measurement | Manufacturer maximum, not our measurement |
| USB-C | 5 V, 3 A | PD up to 100 W |
| Preheating | Not established in checked specification | Documented feature |
Anker: an identified model in another market
The Japanese R3130 specification separates 500 A starting current from a 1000 A maximum, with 12,800 mAh and 5 V/3 A USB-C. Its stated engine limits are 6.0-litre petrol and 4.0-litre diesel. Those belong to this reference and market, not a guarantee for every engine. The located documentation does not confirm current Spanish availability or sales terms: match the label, manual and seller before judging a listing.
Gooloo: USB charging is a useful distinction
The GT4000 specification documents bidirectional USB-C charging up to 100 W and preheating. Compatible adapter and cable are required to exploit fast charging; check the actual package. Extreme-cold advertising is not a guarantee of starting in every climate. The page itself gives different temperature limits in promotional text and its FAQ, so consult the manual for your unit rather than relying on an isolated sales claim.
External experiences and their limits
G2Dolphin published a GT4000 test on PlusPDA in May 2023: two vehicles started successfully and power-bank functions were useful, but charging produced heat and severe-cold starting was not tested. The author disclosed buying the unit and receiving a case as a gift. In a 2021 r/Mustang thread an owner identifies the Roav 1000A and reports satisfactory use. That is an independently unverified anecdote, not a representative sample or joint test.
Our vehicle-dependent recommendation
Gooloo is more interesting if high-power USB-C is also needed; Anker may fit if the R3130 and its requirements match your vehicle. We declare no reliability winner or guaranteed number of starts. Follow both vehicle and jump-starter manuals, check voltage and polarity and respect storage limits. Do not use the equipment to force a start with a damaged battery. Commercial links are searches, not confirmation of variants, accessories or availability.