JUMTOP N12 QDSP 2500A Peak 20800mAh Portable Car Jump Starter (8.0L Gas/6.5L Diesel Engine), 12V Auto Battery Booster with Dual USB Quick Charging Port and LED Flashlight (with Wall Charger)

Tried it on a 21hp mower and it didn't work - tried on a 1999 jeep 4l 6cyc also did not work. Sent it back.UPDATE ..... Customer service is outstanding - after sending the first one back, I was contacted by a CSR and they sent me a new unit immediately. The carrying case and attachments are all top quality.I charged the unit for 24 hours and tried it on both the Jeep and Craftsman rider and it worked fine - no problem. Very happy to have such a small unit to carry in the car. I would certainly buy from this company again. A special thanks to the representative who contacted me.

The unit works okay- have used it a couple times. However, for some reason they DO NOT include a 5V wall adapter for charging the unit, so you must use the USB adapter which can take up to 14 hours to fully charge. I don't consider this omission acceptable, and therefore 3 star rating.(UPDATED 1-18-19) I have improved the rating to 4 stars because the unit works very well and I had an excellent response from the companies customer service department. They apologized for omitting the wall charger in their product kit, and offered to send me the wall charger for free. Good customer service is a BIG part of overall product value, so they deserve a better-than-average rating.(UPDATED AGAIN, 2-3-19) Have raised my rating to 5 stars because (1) have used the unit several times and it works perfect and (2) the customer service department contacted me and sent me a free wall charger, and demonstrated the highest level of customer support I have had in years.

I bought 3 different 2000 amp jump starters. Of the 3 I bought this is the only one that successively fired up my 6.6 DuraMax diesel Chevy, with both batteries disconnected!!. One of the others, turned it over but not as convincing as this one.The 3rd one wouldn't turn the engine over. Both the other 2 are going back and this is a keeper. This little guy packs alot of juice.I just might pick up another for my dad for the holidays.

I like this portable car jump starter. It is not just a compact car jump starter, but also a power bank. Moreover, It includes all necessary cables and adapters to power up most of electronic devices. I tried to charge my iPhone .I highly recommend it 👍👍

I ran my truck battery down by leaving my trailer attached and running my heater all night. I had just purchased the "Jumtop" with the intention of using it for our Razor and ATV while camping. I have a smaller one of a different brand and it is a 1 to 2 jump tops. I was skeptical about using the "Jumptop" but out of shear laziness I didn't want to get the jumper cables out of the BOTTOM of the tool box so I tried it.....My truck has a CAT motor in it and the glow plugs take 1 minute and a half to 2 to heat and the truck cranks 6-10 times usually before even thinking of starting, anyway it turned over like it had a complete charge and didn't even hesitate!!! it did have 2 lights of charge left but needless to say I'm impressed!!

I'm not a car expert but I know the how messy you can get if you jump your car incorrectly. Especially you park the car in some airport parking lot for a few days, your battery goes low and there's no one around you to help you.This portable battery saves lots of work and solve the problem! My car had a dead battery for a while and I couldn't find a long enough jumper cable because my another car's battery is at the other side. Instead of buying a 10 feet cable to connect my two car's batteries, I bought this product and gave it a shot. The product is packed nicely in a hard case, the battery part is well protected. It also comes with some accessories to allow you charge phones and other stuff. It even has a DC output (for electric air pump, if you have a dead battery and flat tire at the same time, what a day!). Instruction manual is only a few pages (only took me 2 minutes to understand how it work), i guess it has no much to talk about because it's just too easy to use. I immediately went to my car and tried it. The cable attached to the battery is a little short, but it's enough to reach all types of car battery. There's a screen and buzzer feature to tell you the condition of the car battery (my case is 14.7V, is kind of low, so my car couldn't start). Simply just connect the clamps to the corresponding ends (red for positive +, black for negative -).That's it, only 2 steps. And then I tried to start my engine, turning my key, and it cranked for a few seconds and then my car came back to life! I am glad to have this product, and I definitely recommend everyone to have one if you are have no experience for jumping a car.

This car jumper is super convenient. I unfortunately had the opportunity to actually test out this when I was on the road. I keep this in my glove compartment and it is super small and portable. I easily connected it to my car and it started right back up. I was surprised how nicely it worked. I usually use this product in phone battery emergencies as a portable charger and even a nice flashlight. It is great to bring on camping trips. So far I have no issues. I would definitely recommend this to a friend

This "little" unit packs a lot of power for its size. Not only it stores quite a bit of power (20800 mAh) and has an intelligent interface to ensure a safe battery jump, but has a lot of additional outputs:- 2 regular USB ports: one with 5v output (2.1 amp capacity for your tablet) and a "smart" USB that outputs 5v / 9v or 12v, an amazing flexibility.- A 12v "car cigarette lighter" output (to allow hook up to inflators, vacuums and other 12v appliances)- A Type-C 5v input/output socket to charge or draw power- A built in flashlight to help if used at night or dark spaces Don't let the small size and light weight (22 oz.) fool you: lots of stuff in a very well designed product. Also like the nice case it comes with for easy and neat storage. Couldn't be happier with it.

L'ho preso per diverse necessità, avendo diversi veicoli, alcuni che rimangono fermi per piu' tempo, non è raro che serva doverli mettere in carica.Con questo prodotto non ho problemi di dover attendere la carica o fare ponti tra i veicoli.Provato con un trattorino rasaerba e nessun problema.In più è esteticamente gradevole e con un'ottima dotazione di accessori.

Lo strumento risulta semplice da usare ed efficace sia come powerbank portatile di grandi dimensioni che per avviare la macchina in caso di necessità.Il prodotto si presenta solido e ben costruito oltre che presentato in un package comodo con una custodia che consente di tenere lo strumento in auto senza problemi e in ordine.Unica nota, il prodotto come descritto non contiene un caricatore usb, che va comprato a parte. Bisogna assicurarsi che il.caricatore sia almeno da 2A altrimenti i tempi di ricarica della batteria del power bank in casa sono troppo lunghi.Ho avuto modo di testare l'avvio dell'auto con batteria scarica ed è stato un completo successo. La luce integrata è stata utilissima.Davvero un ottimo acquisto.

Ottimo prodotto, compatto e soprattutto facile da usare.Ho avuto modo di provarlo con uno scooter e con un furgone con batterie praticamente esaurite ed ha funzionato “alla prima”.La ricarica avviene tramite cavo USB in dotazione oppure mediante adattatore da auto.Molto utile anche la torcia e può, inoltre, essere utilizzato per ricaricare cellulari, tablet e altri dispositivi.

E' arrivato con un giorno di anticipo. Confezione integra. Custodia elegante e molto protettiva. Ingombro minimo. Leggero. Spiegazioni esaurienti per un funzionamento semplice. Utilizzato subito (SUV 6 cilindri 3000 cc, con batteria completamente esaurita da molti giorni) dopo un completamento di carica di un paio d'ore (utilizzando una presa USB - geniale). Motore partito al primo colpo ma impianto elettrico totalmente spento dopo pochi secondi. Staccato e ricollegato con le stesso risultato per altre 4 volte. Quindi ho capito che l'avviatore dopo qualche secondo (molto meno dei 30 raccomandati) va in blocco e blocca anche l'impianto elettrico dell'auto. Bisogna staccarlo immediatamente dopo che il motore è partito. Così ho fatto ed è andato a buon fine. Ho fra l'altro constatato che l'avviatore ha una buona riserva di carica. Giudizio per il momento ottimo.

l'avviatore auto JUMTOP 2500A/20800mAh consente l'avvio di un'auto con la batteria scarica. Il packaging è essenziale, ma ben fatto. Tutto è raccolto in un astuccio robusto in grado di accogliere tutto il necessario. L'avviatore va tenuto carico. E' necessario verificarne lo stato ogni 2-3 mesi e ricaricare (consiglio di farlo comunque indipendentemente dal livello mostrato dalle spie). Attenzione, il caricabatterie non è incluso. Il cavetto USB per la ricarica è incluso. L'avviatore può essere ricaricato con un comune caricabatterie da cellulare. Può essere anche utilizzato come powerbank per laptop, cellulari e tablet. Il dispositivo è dotato anche di una pila LED che aiuta molto nelle operazioni di collegamento alla batteria. Vi consiglio, inoltre, di scannerizzare ed ingrandire il manualetto delle istruzioni per averlo sottomano in garage o all'aperto senza dovervi portare una lente d'ingrandimento (il manualetto è piccolissimo). Come dicevo, buono il livello costruttivo e buono anche lo spunto. Ho avviato una Nissan QQ 1.6 con la batteria completamente a terra senza alcun problema. L'avviatore ha consentito 4 tentativi senza scaricarsi completamente. Prodotto valido e consigliato. Non di livello cineseria.