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Portable Car Jump Starter 4000A Peak 39800mAh

Portable Car Jump Starter 4000A Peak 39800mAh

2.8(627 ratings)

Best price now

$52.99at WalmartObserved at 9:33 PM

Compared across 2 stores. Prices are checked against each store and labelled with when.

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Our take on the Portable Car Jump Starter 4000A Peak 39800mAh

A 12V lithium jump starter rated at 4000A peak and 39800mAh, sold with jumper clamps, a cigarette lighter adapter and a manual. It claims up to 20 jumps per charge, reverse polarity protection, a digital display, a built-in light and dual USB 3.0 outputs, and it charges in about 6 hours. Its best new price is $52.99 at Walmart as of November 7, 2026, with two stores listing it new. The 2.8 out of 5 rating from 627 ratings is weak for this category, so treat the headline numbers with caution.

Best forDrivers who want a cheap backup jump starter in the trunkMotorcycle and ATV owners with 12V batteriesBuyers who also want USB charging and a flashlight from one packOccasional use on cars, not a shop or fleet
Pros
  • 4000A peak rating is high for the price
  • 39800mAh capacity with up to 20 claimed jumps per charge
  • Reverse polarity protection and a digital display
  • Dual USB 3.0 outputs double as a power bank
  • Built-in light helps in the dark
  • About 6 hours to a full charge
Cons
  • 2.8 out of 5 from 627 ratings is below average for jump starters
  • No air compressor despite the large body
  • Cigarette lighter adapter included, but no wall charger or case listed
  • Claimed 4000A and 39800mAh are hard to verify at this price
  • Only two stores list it new, so price competition is thin

Portable Car Jump Starter 4000A Peak 39800mAh prices at every store

  • WalmartNew

    In stockSold by GPED INC

    $52.99Observed at 9:33 PM
    Visit Walmart
  • eBayNew

    In stockSold by cerv-8479

    $65.99Observed at 9:33 PM
    Visit eBay

Store links may earn us a commission.

Portable Car Jump Starter 4000A Peak 39800mAh price history

Lowest price we've seen: $52.99 on Nov 8 at Walmart. Tracked across 2 stores since Nov 8.

What reviewers say

  • 2.8 / 5627 ratings

Ratings average 2.8 out of 5 across 627 ratings, which is low for a jump starter. That pattern usually points to units that fail to start a car or lose charge between uses, though the spec sheet reads well.

What people mention
  • ReliabilityCriticisedThe low average rating suggests buyers question whether it starts a car when it counts.
  • BatteryMixedThe 39800mAh capacity and 20-jump claim look strong on paper but draw doubt at this price.
  • Power outputMixedThe 4000A peak figure is the main selling point, and buyers are unsure it holds up.
  • ExtrasPraisedUSB ports and a built-in light add everyday use beyond jumping.

Specifications

Product Type
Jump Starter
Compatible Engine Size
All Gas or Diesel Engine
Compatible Vehicle Type
Vehicles (12V), ATVs (12V), Auto, Motorcycles (12V)
Compatible Voltage
12V
Safety Certifications
Standard certification
Included Accessories
User manual, Cigarette lighter adapter, Portable jump starter
Peak Current

Questions and answers

Is $52.99 a good price for this jump starter?
It is the best new price found as of November 7, 2026, at Walmart, and only two stores list it new. For a 4000A-rated pack that is low, but the 2.8 rating means the savings carry risk.
Will it start a diesel truck?
It is listed as compatible with all gas and diesel engines and 12V vehicles, ATVs and motorcycles. Real-world results vary, and the weak ratings make a diesel claim worth testing before you rely on it.
How many jumps do I get per charge?
The listing claims up to 20 jumps on a full charge, with about 6 hours to recharge. Charge it every few months so it is ready when you need it.
Does it have an air compressor?
No. It has a light, a digital display and USB ports, but no tire inflator.
What comes in the box?
The jump starter, jumper clamps, a cigarette lighter adapter and a user manual. No wall charger or carry case is listed.
Can I use it as a phone power bank?
Yes. It has dual USB 3.0 output ports, so it can charge phones and other small devices between jumps.
Where is the Portable Car Jump Starter 4000A Peak 39800mAh cheapest?
At Walmart, for $52.99, as of our latest check.
What do buyers say about the Portable Car Jump Starter 4000A Peak 39800mAh?
Rated 2.8 out of 5 from 627 ratings.
Where can I buy the Portable Car Jump Starter 4000A Peak 39800mAh?
2 stores we checked sell it, including eBay, Walmart.

Stores we've priced the Portable Car Jump Starter 4000A Peak 39800mAh at

  • Walmart deals and prices
4000 peak current
Supported Engine Type
Gas Engine, Diesel Engine
Starts Per Charge
Up to 20 times on a full charge
Reverse Polarity Protection
Yes
Battery Indicator
Yes
USB Ports
Yes
Air Compressor
No
Digital Display
Yes
Built-In Light
Yes
Jump Starts Per Charge
Up to 20 times on a full charge
Charging Speed
75% faster charging speeds (Dual USB 3.0 output ports)
Peak Amperage
4000A
Battery Capacity
39800mAh
Battery Charging Time
About 6 hours (fully charged)
Battery Type
Lithium
Battery Voltage
12V
Suitable Engine Size
All Gas or Diesel Engine
Suitable Vehicle Type
Motorcycles