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lithium jump start batteries and other jump starters

see also:

  • I don't sell any of these nor do I receive any remuneration if you buy them, and I have not personally reviewed them, they are listed here to give you perspective


  • traditional jump starter batteries are lead acid chemistries excluding most deep cycle batteries
  • most 12V lithium batteries are NOT suitable for jump starting cars
  • a jump starter which uses a LiFePO4 battery will be more efficient than one that uses a Li-ion or Li-Po battery
  • this page outlines some options for batteries which can jump start cars as well as battery-less options

will the jump start device actually work for my car?

  • most devices have a peak amp rating
    • in general this is not very useful as it is only the maximum current for a few secs not the 30secs you may need to crank your engine
    • however, it is likely that a device rated at 1000 peak amps will do better that one rated at a lower peak amperage
  • some devices give the cold cranking amps (CCA) rating
    • this is better but perhaps not in Australia - the rating is for 30secs current at 0 °F (-18 °C)
    • a small car needs 150 CCA
    • a SUV may need 450 CCA
    • 500 CCA should start most vehicles
  • a better measure is the cranking amps (CA) rating
    • this is how much current it can put out for 30 secs at 32℉ (0 °C)
    • presumably this is what manufacturers are referring to when they state starting current
    • a small - medium car with 6 cyl petrol engine or 4cl diesel engine will draw a peak current of 300 CA
    • a 4WD, especially if diesel will require at least 400 CA
    • most of the devices below provide at least 500CA which is adequate for most vehicles
  • how much cranking amps do I need?
    • the larger the engine the more energy needed to turn it over
    • the older the engine the more energy you need
    • the colder the device the less it will output at zerodegC the max output may be reduced by around 35% for a lead acid jump starter
    • the colder the engine the greater the cranking amps you will need at zero deg C you may need 50% more power
  • a device with greater capacity will give more jump starts

Small lithium power banks with jump start capability

  • as a minimum, these generally have:
    • a lithium polymer battery
    • LED torch with SOS mode
    • power indicator
    • 12V or 15V 1A (or sometimes 2A) input for charging
    • 12V 10A output
    • 12V jump start port and jump start cables
    • USB 5V 2.1A out
    • PREFERABLY USB-C PD for fast charge input/output
  • Rooboost™ RB-PRO1500 1500A Peak Car Jump Starter
    • 16000mAh 5V; 120W; QDSP Quick Discharge Start Power technology jump start; peak 1500A; torch; wireless smartphone charging; QC 3.0 USB-C; DC out; USB charge in 3-4hrs;
    • 19.3 x 3.3 x 8.9 cm; 1kg;
    • $AU149
  • GOOLOO GP37-Plus 1200A Peak 18000mAh Portable Car Jump Starter
    • as per minimum specs above plus USB Quick Charge out; charges within 5hrs and holds charge for 3 months;
    • peak 1200A;
    • 15.7 x 7.5 x 3.6 cm; 526g;
    • $AU119
    • 20000mAh 3.7V battery; can hold its charge for up to 6 months; peak 1000A; starting current: >500A; 12V 8A output; can also charge 12V, 16V and 19V DC devices as well as USB out;
    • 15V 1A charger;
    • 190x85x35mm; 625g;
    • $AU249
    • 20000mAh 74Wh 3.7V battery can hold its charge for up to 6 months and chargeable via 12V DC or 240VAC taking 4-5hrs; peak 2000A; 10W QI wireless charger for smartphones;one QC 3.0 USB; one USB-2 out; 12V 8A out but no 16V/19V out;
    • 195x85x45mm 650g for unit itself (whole package 1.4kg)
    • $AU349 ($AU175 on special)
    • 12V 2.8Ah LiFePO4 battery; > 3000 cycles;
    • 5V charging;
    • 350g;

Medium sized lithium batteries suitable for jump starting

lithium ion batteries

  • PowerTech Ultra High Capacity 1000A 12/24V Lithium Jump Starter ?MB-3759
    • 22,200mAh; 110Wh?
    • start 500A; peak 1000A; (half this for 24V systems)
    • 15V 2A charger; 2.7kg;
    • $AU369 Jaycar
    • 7.3Ah 12V 88Wh battery; 60W PD in/out; 2x quick charge USB out 18W
    • Starting current: >2000A; Peak current: 3000A; 1000 cycles battery
    • IP65; 500 lumen torch; 6hr charge; battery charge level LED;
    • 240*140*60mm ; 1.3kg; (package 2.1kg)
    • $AU449

LiFePO4 batteries

  • Projecta 12 Volt 1500A Portable Powerful Lithium Jump Starter Booster Is1500
    • 88.8Wh 4-cell 8Ah battery starts most vehicles up to 6.0L diesel and 8.0L petrol
    • docking station is provided to allow the unit to be charged from a 240 Volt AC outlet
    • peak: 1500A; clamp 550A; 2000 cycles rating;
    • unfortunately, no options for use as a power bank
    • 4kg; 196 x 235 x 180mm
    • $AU649

standard car size 12V lithium batteries for jump starting

  • these are currently quite uncommon on the market (2021) as nearly all 12V lithium batteries are designed as deep cycle and not for jump starting
  • those made for jump starting are generally NOT designed to be mounted under the bonnet as it is too hot
  • have a button for jump starting mode
    • 40Ah LiFePO4 peak 400A 400CCA crank via push button; voltage meter; round terminals;
    • 5.24kg; $AU410
  • TPower 1000CCA 12v 100ah Car starting Lifepo4 lithium battery

Battery-less super-capacitor jump starters

  • these do not contain a battery but uses a super-capacitor to provide the charge
  • they have the advantage of rapid charging:
    • at 12V source might charge them in under 2 minutes
    • a 12V 10A cig lighter source may charge them in 5 minutes
    • a USB source may charge them in under 1hr
    • may even be charged by a flat battery with only 3V left so they can be left uncharged in the car and used when the battery goes flat
  • another advantage is they do not lose charge over time
  • the disadvantage is that they can't charge or power other devices
    • 500CA; rated to 500,000 charge/discharge cycles ; IP65;
    • 123x218x56mm; 1153g;
    • might not be suitable for certain DIESEL engines that require high power to activate the vehicle’s glow plug.
    • peak 1000A
    • 275 x 250 x 89mm; 2.5kg; $AU499

24V lithium jump starters

australia/jumpstarter.txt · Last modified: 2022/06/15 23:57 by gary1

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