5.0 out of 5 stars A must have!

2026-02-23    -BeachGoer

I have purchased 2 of these now. One for my car and one now for my teen driver. This has saved me a couple of times. I used it to help a friend too. Easy to use. A must have in my cars. I have only used it to jump start a car(s) so I can't comment on the speed it takes to charge other items, such as a phone, etc. The size is great, smaller than old style jumper cables. It has worked great for me every time. I'll have another teen driver next year and if he gets a car then I will be buying another of these for sure.

5.0 out of 5 stars Reliable, Well-Made, and Excellent Value - My Go-To Car Jump Starter

2026-01-29    -Sue

When it comes to car accessories, few things are as important as having a dependable jump starter on hand for those inevitable dead battery situations. After plenty of research, I settled on this particular car battery jumper, and I couldn't be happier with my purchase.Right out of the box, I was impressed by the quality construction and solid feel of this jumper. It has a rugged, heavy-duty vibe that inspires confidence in its ability to handle tough jump-starting jobs. The hardshell carrying case is well-designed and it looks nice too.But the real test, of course, is in its performance - and this jumper delivers in spades. I've used it multiple times to revive dead batteries in various vehicles, from compact cars to pickups. No matter the engine size, it fires them up without issue.What really puts this jump starter over the top for me is just how easy it is to use. The clear instructions make the process virtually foolproof, even for battery jump starting novices. And the built-in safety features, like reverse polarity protection, give me peace of mind that I won't accidentally damage my vehicle's electrical system.As an added bonus, this unit doubles as a portable power bank with USB ports for charging phones, tablets, and other devices when you need a quick recharge on the go. The built-in LED flashlight is also a nice touch for those roadside situations when you need a little extra light.In terms of value, this car battery jumper is an absolute steal. The combination of quality, ease of use, versatility, and reliable performance make it well worth the investment. Plus, it could potentially save you from costly towing fees or repair bills down the road.In my experience, this car jump starter has more than earned its keep. It's solidly built, user-friendly, and just plain works as advertised every single time. I wholeheartedly recommend this product to any vehicle owner looking for an essential roadside emergency tool. You'll be glad you have it when you need it most.

5.0 out of 5 stars So good - Just ordered another one for the other car

2026-02-05    -SKL

Works like a champ. Just had it in the car for emergencies. My battery died the other day and I figured I'd try it out... it did not let me down! Very easy to use. It was sitting in the car for over 3 months. Worked so well that my wife asked me to get one for each of our other cars... Just ordered another one.

5.0 out of 5 stars So good - Just ordered another one for the other car

2026-02-25    -SKL

Works like a champ. Just had it in the car for emergencies. My battery died the other day and I figured I'd try it out... it did not let me down! Very easy to use. It was sitting in the car for over 3 months. Worked so well that my wife asked me to get one for each of our other cars... Just ordered another one.

4.0 out of 5 stars Stay Away From This Brand

2026-02-10    -F. Domina

UPDATE 09-Sept-2025: I still can't give more than four star on this particular model (previously 1 star), but the seller, who deals directly with the factory (I suspect they're basically the marketing for this brand in the US), deserves 5 stars. Not only did I get a refund, they sent me a free one that is a different, older model that they said has been extremely reliable as a thank you for my time in helping them diagnose an issue with a different model. The one they sent is a different brand (S ZEVZO, model ET 03), but I bet it's really the same manufacture. I like that one because it shows the voltage and current it's charging at. Maybe take a look at that one.As for my ORIGINAL review, here it is:Three strikes and they're out. I really wanted to like this product, but I can't even make myself like the brand. Allow me to explain my experience...Last Christmas I bough one of the DB Power model DJS90 jump starters (the red, 3000A unit) for my daughter since she was away at college and I wanted her to have a jump starter in an emergency. It charged up fine and seemed fine, but we had no dead battery to test it on. Now I'm concerned that if she needs it, it will fail. Why? Well, fast-forward to this summer, when I decided to buy another DJS90 for myself. It arrived NOT in its box, just it's carrying case, and it was clearly used and returned. Maybe that's the seller's fault, but I wasn't about to trust something someone else returned. Amazon shipped me another, but...Though that replacement unit was new, and shrink-wrapped, it would not charge. In fact, it made my charger, and the plug, very warm. And the level never increased. So, back it went. Now it's late August and there was a good sale on the Z07 model (yellow, 5000A). It arrived with a 75% charge, which isn't unusual because it's safer to ship Li-Ion batteries when not fully charged. So, of course I put it on a charger. (A 30W Anker charger.) Within a couple hours it hit 95%, but would not go above that, and when I disconnected the charger, the level rapidly dropped to below the initial 75%. For the heck of it I then tried my 60W laptop charger, but encountered the same result. Yet another DBPower jump starter to return. I absolutely cannot recommend this brand.Like I said, the original DSJ90 bought last Christmas did charge fine, but is it trustworthy? What I do know is that a NOCO jump starter I bought for my wife several years ago works great, and it has been used to jump a completely dead battery. I'm done playing games with DBPower. I'm going to get another NOCO for myself. I'm posting this same review for the DSJ90 and the Z07 models, but the Z07 model (yellow, 500A) review will include a video.

5.0 out of 5 stars Fantastic Car Jumper

2026-02-11    -HDFATBOY

5 Stars!!! What a great charger, I loved it so much that I bought 2 more for my siblings. Have utilized it numerous times and works like a charm and you can’t beat the price. The charger also holds a charge for a very long time so you don’t have to worry that it’s not going to work when you need it the most.

4.0 out of 5 stars Stay Away From This Brand

2026-01-27    -F. Domina

UPDATE 09-Sept-2025: I still can't give more than four star on this particular model (previously 1 star), but the seller, who deals directly with the factory (I suspect they're basically the marketing for this brand in the US), deserves 5 stars. Not only did I get a refund, they sent me a free one that is a different, older model that they said has been extremely reliable as a thank you for my time in helping them diagnose an issue with a different model. The one they sent is a different brand (S ZEVZO, model ET 03), but I bet it's really the same manufacture. I like that one because it shows the voltage and current it's charging at. Maybe take a look at that one.As for my ORIGINAL review, here it is:Three strikes and they're out. I really wanted to like this product, but I can't even make myself like the brand. Allow me to explain my experience...Last Christmas I bough one of the DB Power model DJS90 jump starters (the red, 3000A unit) for my daughter since she was away at college and I wanted her to have a jump starter in an emergency. It charged up fine and seemed fine, but we had no dead battery to test it on. Now I'm concerned that if she needs it, it will fail. Why? Well, fast-forward to this summer, when I decided to buy another DJS90 for myself. It arrived NOT in its box, just it's carrying case, and it was clearly used and returned. Maybe that's the seller's fault, but I wasn't about to trust something someone else returned. Amazon shipped me another, but...Though that replacement unit was new, and shrink-wrapped, it would not charge. In fact, it made my charger, and the plug, very warm. And the level never increased. So, back it went. Now it's late August and there was a good sale on the Z07 model (yellow, 5000A). It arrived with a 75% charge, which isn't unusual because it's safer to ship Li-Ion batteries when not fully charged. So, of course I put it on a charger. (A 30W Anker charger.) Within a couple hours it hit 95%, but would not go above that, and when I disconnected the charger, the level rapidly dropped to below the initial 75%. For the heck of it I then tried my 60W laptop charger, but encountered the same result. Yet another DBPower jump starter to return. I absolutely cannot recommend this brand.Like I said, the original DSJ90 bought last Christmas did charge fine, but is it trustworthy? What I do know is that a NOCO jump starter I bought for my wife several years ago works great, and it has been used to jump a completely dead battery. I'm done playing games with DBPower. I'm going to get another NOCO for myself. I'm posting this same review for the DSJ90 and the Z07 models, but the Z07 model (yellow, 500A) review will include a video.

5.0 out of 5 stars Powerful and Excellent

2025-12-25    -Khalil Hamilton

Quite powerful. I charged the starter up and jumped my 2013 Honda CRV 4 maybe 5 times over the span of a weekend. The jump starter STILL AT 100%. Great size. easiest connection possible. It jumps extremely quickly with built in lights to signal your connection is correct. Only thing I would mention is that it’s essentially useless to charge devices. It will only give my phone 1% per minute of charger. It’s good enough as a jump starter to just buy a phone power bank.

5.0 out of 5 stars Reliable, Well-Made, and Excellent Value - My Go-To Car Jump Starter

2026-02-11    -Sue

When it comes to car accessories, few things are as important as having a dependable jump starter on hand for those inevitable dead battery situations. After plenty of research, I settled on this particular car battery jumper, and I couldn't be happier with my purchase.Right out of the box, I was impressed by the quality construction and solid feel of this jumper. It has a rugged, heavy-duty vibe that inspires confidence in its ability to handle tough jump-starting jobs. The hardshell carrying case is well-designed and it looks nice too.But the real test, of course, is in its performance - and this jumper delivers in spades. I've used it multiple times to revive dead batteries in various vehicles, from compact cars to pickups. No matter the engine size, it fires them up without issue.What really puts this jump starter over the top for me is just how easy it is to use. The clear instructions make the process virtually foolproof, even for battery jump starting novices. And the built-in safety features, like reverse polarity protection, give me peace of mind that I won't accidentally damage my vehicle's electrical system.As an added bonus, this unit doubles as a portable power bank with USB ports for charging phones, tablets, and other devices when you need a quick recharge on the go. The built-in LED flashlight is also a nice touch for those roadside situations when you need a little extra light.In terms of value, this car battery jumper is an absolute steal. The combination of quality, ease of use, versatility, and reliable performance make it well worth the investment. Plus, it could potentially save you from costly towing fees or repair bills down the road.In my experience, this car jump starter has more than earned its keep. It's solidly built, user-friendly, and just plain works as advertised every single time. I wholeheartedly recommend this product to any vehicle owner looking for an essential roadside emergency tool. You'll be glad you have it when you need it most.

5.0 out of 5 stars Powerful and Excellent

2026-01-23    -Khalil Hamilton

Quite powerful. I charged the starter up and jumped my 2013 Honda CRV 4 maybe 5 times over the span of a weekend. The jump starter STILL AT 100%. Great size. easiest connection possible. It jumps extremely quickly with built in lights to signal your connection is correct. Only thing I would mention is that it’s essentially useless to charge devices. It will only give my phone 1% per minute of charger. It’s good enough as a jump starter to just buy a phone power bank.