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Categories > Jump Starters, Battery Chargers & Portable Power > OEM > 12000mAH Portable Power Bank and 12V Car Jump Starter Battery Charger for Laptop Cellphone LED Emergency Light 12VDC Power Supply for Car Devices-Black

Rating + 4Rating + 4Rating + 4Rating + 4Rating + 4 Stuff
Pros: Small, packs a lot of power so far so good works well great price time will tell how well it continues to handle the usage of everyday charging etc. Seems like it could come in very handy when needed I those unexpected emergency's! Big power in a little package?
Cons: none yet
Reviewed By:gworld,9/18/2014 10:15:00 PM
This reviewer reports that his/her technical understanding of this type of product is average and has owned this product 1 day to 1 week.
This user purchased this item from Newegg

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Categories > Jump Starters, Battery Chargers & Portable Power > The Noco Company > NOCO CL3BL ChargeLight 250 Lumen LED Flashlight + 2600mAh Lithium Battery Pack - Blue

Rating + 5Rating + 5Rating + 5Rating + 5Rating + 5 Very nice combo light/battery pack
Pros: Nice flashlight with multiple modes of operation. I like that after a mode is chosen and not changed within 2 seconds that the next press of the on/off /selection button will turn of the light. As an USB battery pack, the light has a separate battery pack on/off switch.
Cons: Another wall-wart power supply/charger.
Reviewed By:N/A,9/17/2014 9:42:42 AM
This reviewer reports that his/her technical understanding of this type of product is High and has owned this product 1 week to 1 month.
This user purchased this item from Newegg

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Categories > Jump Starters, Battery Chargers & Portable Power > Tenergy > Propel Ultra Portable LiFePO4 Jump Starter Power Bank Car Kit

Rating + 2Rating + 2Rating + 2Rating + 2Rating + 2 AutoZoon substitute is NOT LiFePo4
Pros: It does work and most buyers won't notice the Li-Ion substitution.
Switcheroo has 19V output for laptop, extra 12V 2A output jack. USB will supply 1.75A if the device can draw it. Can be charged while charging a USB device. It jumpstarted a 2.0L and then 1.4L dead car, no problem.
Cons: The device delivered by Autozoon from China is Li-Ion, not LiFePo4 as advertised. There was no notice or indication of the substitution.
The unit received is labeled as "15000mah Battery Capacity" but a Li-Ion battery analyzer reports only 2782mAh. The output voltage is lower than 14+V LiFePo4, charging 3 Li-Ion cells to only 12.50V.
Other Thoughts: I notified the Chinese vendor Autozoon of the problem, and was told that the Li-Ion power bank has the same function, and that LiFePo4 cells are not readily available. I accepted a small partial refund rather than repacking and return shipment.

The LiFePo4 powerbank from Propel Direct is hopefully not the same as what Autozoon delivered.

I raised an alarm about the danger of supplying the wrong battery type without any indication. The jumper cables have a protection circuit (probably schottky diodes), but the 12V 2A output jack does not. It is apparently connected to the cells and is capable of charging them, if accidentally. The internal cells may be individually protected, but there are dire warnings on the case to disconnect the powerbank from a vehicle within 30 seconds of starting. It's accompanied by the icon of a bomb exploding.

Fire is possible if the three Li-Ion cells in series were treated as four series LiFePo4 cells. LiFePo4 has a lower cell voltage, but motorsports batteries using four cells are nicely compatible with most vehicle charging systems (about 14.3V). The 12.5V Autozoon replacement power bank is not, as it could put 4.8V to a Li-Ion cell that has a maximum safe rating of 4.25V.

For the curious, the 2782mAh discharge was at an average of 487ma and took 5:49 from 12.5 to 9.0V (average 11.54V). That comes out to 32.1 Watt-hours of battery capacity. To figure an upper limit on its charging capacity, divide 32 by the voltage of the battery you want to charge. For a Li-Ion cell in a phone, that would happen to be 3x the internal 3 LiIon cells or 8346mAh. Divide that by an estimate of the losses from triple conversion and USB cable resistance, and it might fully charge a tablet twice.

I still hope that a LiFePo4 power bank direct from Propel will be relisted with accurate voltage and capacity specs on the cells.
Reviewed By:pinch,8/30/2014 8:28:09 PM
This reviewer reports that his/her technical understanding of this type of product is High and has owned this product 1 week to 1 month.
This user purchased this item from Newegg

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Categories > Jump Starters, Battery Chargers & Portable Power > AGPtek > AGPtek VIPOW A2 Portable Car Jump Starter Multifunction Power Bank with LED Emergency Light - 9000mAh,12V

Rating + 5Rating + 5Rating + 5Rating + 5Rating + 5 cool tool
Pros: within days of receiving the device, someone asked me for a jumpstart in a gas station parking lot. engine would barely turn over. disconnected his jumper cables, connected the VIPOW and the truck started without hesitation. color me IMPRESSED.
Cons: wish it had a simple plastic carrying case for all components
Reviewed By:bbxl,8/26/2014 4:42:38 AM
This reviewer reports that his/her technical understanding of this type of product is High and has owned this product 1 week to 1 month.
This user purchased this item from Newegg

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Categories > Jump Starters, Battery Chargers & Portable Power > MotoBatt > MotoBatt Lithium Jump Starter

Rating + 5Rating + 5Rating + 5Rating + 5Rating + 5 Good lightweight starter
Pros: Weighs less than 2lbs, is easy to carry, can start cars even when its -15F and the unit was kept in the car overnight.
Cons: Clamps a little small for some car/truck batteries. When very cold (-15F), jump cable gets hard to bend.
Other Thoughts: Although it took 4 tries to start on that very cold day, it did get the car started. Given this its better to keep the unit indoors where its warm and take it to car/truck when starting. Then the cables and clamps work much better and starts on first try. Do charge after every jump for best results.

There are many so called 'lithium' starters that are really SLAs. One can tell by the size, weight, and AH ratings,. but the easiest is the cycle lifes. SLAs get 200 100% discharge cycles, Li-Ions get 400 100% cycles and LiFePO4s get 1000-1500 100% cycles and 2000-3000 80% cycles. This uses the LiFePO4 chemistry in a high discharge rate cells 4S1P or 12.8V@4.5AH 90C 5 second burst (405A), 133C peak (600A) (rated at 25C battery temp). At -15F (-26C) battery temp, you get more like 270A burst, 400A peak.

To alleviate clamps being small, I just use a short car jumper cable (2ft) with the larger clamps. One could also make a cable with larger clamps as the socket on the unit is a standard DC size and type.
Reviewed By:pgerassi,1/28/2014 3:06:33 PM
This reviewer reports that his/her technical understanding of this type of product is High and has owned this product 1 month to 1 year.
This user purchased this item from Newegg

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Categories > Jump Starters, Battery Chargers & Portable Power > Viatek > Renu-it Pro Series Deluxe Alkaline Battery Charger and Reconditioner

Rating + 4Rating + 4Rating + 4Rating + 4Rating + 4 Works as advertised
Pros: Nice features, especially the 9v socket. It works well so far and definitely helps keep the cost of batteries down. You definitely have to check your batteries to make sure they aren't leaking. Standard alkalines can only be charged a limited number of times, but that's not the charger's fault.
Cons: Sliding the battery ground contact back could be a problem. It works but you have to be careful to do it correctly or there's a chance the ground bar will break off. I realize that sliding is necessary to accommodate the different battery sizes, but it is a weak point in an otherwise pretty nice unit. I took off 1 egg because of this.
Other Thoughts: As long as I'm careful with the ground contact and check to make sure the batteries aren't leaking, I believe the unit will be OK and pay for itself in battery cost savings in a year or so.
Reviewed By:Frank M,11/24/2013 5:54:47 AM
This reviewer reports that his/her technical understanding of this type of product is High and has owned this product 1 week to 1 month.
This user purchased this item from Newegg

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Categories > Jump Starters, Battery Chargers & Portable Power > Other Manufacturers > Jump-N-Carry KKJ JNC660 Pro 660 Jump-N-Carry 1700 Peak Amp 12 Volt Jump Starter

Rating + 5Rating + 5Rating + 5Rating + 5Rating + 5 High Quality
Pros: Extremely well constructed. Plastic housing not seam welded, instead held together by screws so the unit is serviceable. Nice Gauge on the jumper cables, as well as length, has much more than other units. Push Button activates volt meter which lets you know the internal battery charge status. Plastic and metal on actual jumper terminals is high quality, no flimsy materials here.
Cons: Doesn't come with a 120 V AC charging cord, you need to have a single ended extension cable which can fit the plug and the cutout where the two prongs are on the front of the case. The Item Description nor mfg state that this is included, so make sure you buy one on your own.
Other Thoughts: Nice to have your own jumper in case of emergencies.
Reviewed By:N/A,1/3/2013 8:26:51 AM
This reviewer reports that his/her technical understanding of this type of product is High and has owned this product 1 day to 1 week.
This user purchased this item from Newegg

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