AstroAI S8 1500A 12V Lithium Jump Starter vs AstroAI S8 Ultra 4000A 12V Lithium Jump Starter
These are side-by-side facts taken from each product guide: published specifications, strengths and caveats as their sources state them. This page is not a test, a ranking or a verdict about which model is better.
AstroAI S8 1500A 12V Lithium Jump Starter
Glovebox-sized starting for 6L gas or 3L diesel engines
AstroAI rates the S8 at 1500 peak amps for 6.0 litre gas and 3.0 litre diesel engines, with smart clamps that flash green and prompt for Boost below 9 volts. AstroAI publishes two S8 manuals with different capacities and port layouts, so check which one arrives in your box.
Published specifications
- AstroAI: 1500 A peak current; rated for 6.0L gas and 3.0L diesel engines
- Listing manual: 29.6 Wh, 2000 mAh at 14.8 V, quoted as 8000 mAh at 3.7 V
- AstroAI manual: 37 Wh, 2500 mAh at 14.8 V, quoted as 10000 mAh at 3.7 V
- Listing manual: USB-C input 5V 2A; one USB-A output at 5V 2.1A
- Both manuals: operation -4F to 122F; charging 32F to 113F
- Both manuals: 2-year limited warranty, original purchaser only
Strengths
- Smart clamps signal correct connection, reversed polarity and a low battery
- AstroAI publishes the full S8 manual on its own site, with specification table
- Both manuals give the same temperature bands and the same 75 percent charge rule
Caveats
- Two AstroAI S8 manuals disagree on capacity, 29.6 Wh against 37 Wh
- In this listing's manual the USB-C port is input only, with one USB-A output
- Warranty covers the original purchaser only and does not transfer with the unit
Read the full AstroAI S8 1500A 12V Lithium Jump Starter guide
AstroAI S8 Ultra 4000A 12V Lithium Jump Starter
Compact 12-volt starting with USB-C power-bank duty
AstroAI rates the S8 Ultra at 4000 peak amps with smart clamps that read the battery and prompt for Boost below 9 volts. Its manual specifies a 59.2 watt-hour pack, two USB-A outputs and a USB-C port, but AstroAI's product page lists a different capacity and a lower engine rating under the same name.
Published specifications
- AstroAI: 4000 A peak current; 12-volt vehicles only, per the manual
- Manual: 59.2 Wh pack, 4000 mAh at 14.8 V, quoted as 16000 mAh at 3.7 V
- Manual: two USB-A outputs at 5V 3A, plus one USB-C input and output
- Manual: operation -4F to 122F; charging 32F to 113F
- Manual: box holds clamps, USB-A to USB-C cable, storage bag; no charger
- Manual: 2-year limited warranty, original purchaser only, non-transferable
Strengths
- Smart clamps signal correct connection, reversed polarity and a low battery
- AstroAI publishes the full manual on its own site, with capacity and temperature bands
- USB-C port works as both input and output on this model's manual
Caveats
- Engine rating differs: the listing claims all gas and 12L diesel, AstroAI's page says 10L and 8L
- Capacity differs: 59.2 Wh in the manual against 24000 mAh on AstroAI's product page
- Warranty covers the original purchaser only and does not transfer with the unit
Read the full AstroAI S8 Ultra 4000A 12V Lithium Jump Starter guide
How to choose between them
Choose the AstroAI S8 1500A 12V Lithium Jump Starter if your situation matches: Glovebox-sized starting for 6L gas or 3L diesel engines. Its main caveat: Two AstroAI S8 manuals disagree on capacity, 29.6 Wh against 37 Wh.
Choose the AstroAI S8 Ultra 4000A 12V Lithium Jump Starter if your situation matches: Compact 12-volt starting with USB-C power-bank duty. Its main caveat: Engine rating differs: the listing claims all gas and 12L diesel, AstroAI's page says 10L and 8L.
Both entries repeat what each guide records. Confirm the model, included parts and availability on the current listing before ordering.
Primary sources
- AstroAI S8 user manual attached to the listing, marked V3.0.0 Source for AstroAI S8 1500A 12V Lithium Jump Starter
- AstroAI S8 user manual hosted by AstroAI, marked V1.3 Source for AstroAI S8 1500A 12V Lithium Jump Starter
- AstroAI S8 product page with technical details table and model selector Source for AstroAI S8 1500A 12V Lithium Jump Starter
- AstroAI S8 Ultra Multifunctional Jump Starter user manual, V3.0.0 (AstroAI-hosted) Source for AstroAI S8 Ultra 4000A 12V Lithium Jump Starter
- AstroAI S8 Ultra product page with technical details table Source for AstroAI S8 Ultra 4000A 12V Lithium Jump Starter
- AstroAI S8 Ultra user manual, copy attached to the listing Source for AstroAI S8 Ultra 4000A 12V Lithium Jump Starter
Primary sources checked .