Car Jump Starter 66666mAh 12V Power Bank 2500A for Gas and Diesel Vehicles

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1. Gearmaster Verified Buyer – 22 June 2024

   I already own the Yesper PD100W Non-Pro version, which has worked tremendously well, so I picked-up this Pro version to not only use for jump starting my vehicles, but to use as a battery backup during power outages to keep my router running so that I can continue to have internet when the grid is down. When it arrived, it had a 70% charge, so I plugged it in to a USB-C wall charger, and it took about an hour to get the unit up to 100%. I will say that my 65W wall charger became pretty hot during the charging process, but that’s probably an issue with the wall charger and not the Yesper. This unit claims to be 66666mAh at 2500Amps Peak. I have no way to test this, but this unit seems quite substantial and there is a lot of heft to this unit, so I believe the claims. This unit is over 4-pounds (at 70oz), and my smaller Yesper is significantly lighter at 34.3oz. The readout on this Yesper, like my other one, is huge and feature rich; it tells you battery capacity as well as in-going and out-going power. This is one of the many selling points of the units from this brand. The dimensions are 10-inches long by 4.25-inches wide and a whopping 4-inches tall/thick. I tested this out by plugging-in a 300W inverter through the cigarette lighter port (that’s what I had, but I realize the Yesper will only put out 120-Watts from the 12V port), and then plugged my internet router into the inverter. It worked great; no issues whatsoever and nothing became hot. If you decide to do this, just remember to press both the power button and boost button at the same time for 2-3 seconds, or else the unit will shut off after around a minute. I know this will jump start my vehicles just fine because my other smaller unit by Yesper is already a beast and performs admirably, so this will have way more reserve power. So, for power outages this is a tremendously nice battery backup that can also jump a vehicle battery! The supplied cigarette lighter 12v cord for charging it up from your car is a nice feature. The 12V cigarette lighter plug also has a USB-A port in it, so that you won’t lose a USB port when using a cigarette lighter port in your vehicle to use the Yesper. It is also a rare feature to find a unit that lets you know if it is too cold to work properly, so that you know if you need to warm it up first. It’s also nice to see that it is IP65 waterproof, so the rain won’t damage it. I was also surprised that this came with a USB-C to USB-C cable, as that wasn’t included with my other unit. I had ironically ordered a cable at the same time I ordered this, assuming it wouldn’t be included, so now I have an extra cable. A couple of minor gripes. This does not come with a case or even a stuff bag, nor does it come with a USB wall charger or the 120W power inverter. I assume that was to reduce the retail price, but I will end-up ordering those items separately anyways, but at the current price-point I would have expected them to be included. If you’re looking for the absolute largest and most powerful battery jump starter, that can also double as a battery backup/ power brick, then this is the one to get.

   

2. Rhonda Cannon Verified Buyer – 4 February 2025

   Bought in September 2023. Tried using it for the first time, Thursday April 25, 100% charged, attached to the car battery and nothing! It did not work!!!! So frustrating!
   

3. Ray Verified Buyer – 23 February 2025

   It feels like a quality item. It ran a test standard 60 watt (12 volt LED) light bulb plugged into its lighter outlet for about 32 hours straight. When kept at a reasonably full charge, besides being able to jump start most cars, it makes an excellent emergency 12 volt power source to do smaller 12 volt powered tasks, like keeping you out of the dark.

   So far at least ..would buy again.
   

4. CTTS Verified Buyer – 13 April 2025

   I really wanted to like this jumper pack. The description and stated specifications are impressive. However, the description and specifications are grossly overstated. This battery pack was completely ineffective at starting my truck that only had a low (not dead) battery. Additionally, after testing the jumper pack, the power ratings were substantially less than stated. I returned the unit to ezysurvival.com for a refund and bought another brand with a lesser description, but it works flawlessly.