Is my car Lithium jump pack dead?

Well, I should know better, and don't even know the brand...
I've got an amazing lithium jump pack, but left it in the car. Where else would you leave it...lol
Wonder what the storage temps are for it? It's not on charge or being used, but it's been down to -10. I wonder what the storage temps are for them? I'll warm it up and charge it before I try to use it...
I've got an amazing lithium jump pack, but left it in the car. Where else would you leave it...lol
Wonder what the storage temps are for it? It's not on charge or being used, but it's been down to -10. I wonder what the storage temps are for them? I'll warm it up and charge it before I try to use it...
Home system 4000 watt (Evergreen) array standing, with 2 Midnite Classic Lites, Midnite E-panel, Prosine 1800 and Exeltech 1100, 660 ah 24v ForkLift battery. Off grid for @16 of last 17 years. Assorted other systems, and to many panels in the closet to not do more...lol
Comments
Kind of a paradox, they have such positive attributes but are let down by physics, which applies to all chemistries but to a lesser degree to those we are more familiar with, such as lead acid.
Second system 1890W 3 × 300W No name brand poly, 3×330 Sunsolar Poly panels, Morningstar TS 60 PWM controller, no name 2000W inverter 400Ah LFP 24V nominal battery with Daly BMS, used for water pumping and day time air conditioning.
5Kw Yanmar clone single cylinder air cooled diesel generator for rare emergency charging and welding.
https://www.costco.com/CatalogSearch?dept=All&keyword=lithium+battery+jumper
Need to find an instruction manual... But many of these are dual purpose... One is a USB "power bank" (5 volts for basic USB), and have a 12 volt output too for jumping a car.
And you need to read between the lines about how much energy they store... For example, this one does (sort of) tell you how much it stores:
https://www.costco.com/cobra-jumppack-xl-h2o-jump-starter-power-pack.product.100412231.html
This compact UL 2743 certified portable power pack contains a powerful 44.4Wh (12,000mAh) battery with dual 3 amp each USB outputs to rapidly charge two 5 Volt portable devices simultaneously making it the ideal emergency battery pack for home, office, vehicle or the outdoors.
- Two Jump Start Options
- 400 Amp Starting Current, 600 Amp Peak Current
- Dual 3 Amp USB Ports
- Built-in LED Flashlight
- Safe to Use in Any Weather condition
- Charge Your Phone
- Start from Inside the Vehicle
400 and 600 amps from something the size of a paperback book--Pretty impressive. Real numbers...- 12,000 mAmpHours -- Sounds big.
- 12 AH -- Compared to a typical car battery at 80 AH--Not so much
- 44.4 WH / 12 AH = 3.7 volts -- That is the voltage of a single Li Ion cell (LiFePO4)
- 44.4 WH / 12 volt car battery = 3.7 AH
- 3.7 AH * 1/400 Amps * 3,600 seconds per hour = 33 seconds of cranking at 12 volts
The manual says -14F to 113F for storage--But keep indoors in cold weather.... Not much help there.Typical LiFePO4 operating range 10C to 40C (50F to 104F):
https://www.researchgate.net/publication/278708441_LiFePO4_optimal_operation_temperature_range_analysis_for_EVHEV
-Bill
Warm it up to 50 or 60F for a couple hours, and it should be fine.
|| Midnight Classic 200 | 10, Evergreen 200w in a 160VOC array ||
|| VEC1093 12V Charger | Maha C401 aa/aaa Charger | SureSine | Sunsaver MPPT 15A
solar: http://tinyurl.com/LMR-Solar
gen: http://tinyurl.com/LMR-Lister ,