Reference charts
Quick answer
Eight dense tables computed from the same formulas as the calculators, built to be quoted: every row states its assumptions.
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All charts
- Dash cam recording time chartHours of dash cam footage per SD card size from 16GB to 512GB at 1080p, 2K, 2.5K and 4K, front only and front ...
- Dash cam SD card size chartWhich SD card size a dash cam needs to keep 1 to 24 hours of footage at 1080p, 2K and 4K, front only or front ...
- Jump starter amps by engine chartCranking amps needed by engine size for gas and diesel at 80 F, 32 F, 0 F and -20 F, with the jump starter rat...
- Tire pressure temperature chartHow tire pressure changes with outside temperature, from 100 F to -20 F, for tires set at 30 to 50 psi at 70 F...
- Tire air volume chartInternal air volume, overall diameter and air needed to add 5 psi for 24 common car, SUV and light truck tire ...
- Car battery voltage chartResting voltage to state of charge for a 12V lead-acid car battery, with what each level means for starting an...
- Battery charge time chartHours to charge 40 to 100Ah car batteries from half charge and from nearly flat with 2, 4, 6, 10, 15 and 25 am...
- Parking mode hours chartHours of dash cam parking-mode coverage by car battery size, camera draw and hardwire cutoff voltage, for a tw...
Before you rely on this: Researched from published specifications and verified owner reviews, not hands-on testing. General information, not professional advice; check your vehicle manual.