18650 Cells: Difference between revisions
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*10W for 1 hour | *10W for 1 hour | ||
*30 of these give 1 kWhr | *30 of these give 1 kWhr | ||
*45g each, so 1 kWhr weighs 1.5 kg. | |||
*At this density, ultra light cars (500 lb total) - will have 30 miles per kwhr. | |||
*1kwhr ~ 4MJ - so about 1/10 kg gasoline. Given gas is 20% efficient in cars, we have 1/2 kg equivalent. Tbis gets us to about 240 mpg equivalent. | |||
*With 1 kW solar added- that gets us to about 400 mpg equivalent. | |||
=Specs= | =Specs= | ||
Revision as of 18:02, 3 February 2019
General Performance
- 10A discharge, self-protection circuit inside.
- 3.7V
- 3 Ahr
- 18 minutes of 37W
- 10W for 1 hour
- 30 of these give 1 kWhr
- 45g each, so 1 kWhr weighs 1.5 kg.
- At this density, ultra light cars (500 lb total) - will have 30 miles per kwhr.
- 1kwhr ~ 4MJ - so about 1/10 kg gasoline. Given gas is 20% efficient in cars, we have 1/2 kg equivalent. Tbis gets us to about 240 mpg equivalent.
- With 1 kW solar added- that gets us to about 400 mpg equivalent.
Specs
- Note actual spec from a buyer on Amazon - [1]
Reviews
- https://thegunzone.com/best-18650-batteries/
- https://www.18650batterystore.com/Best-18650-Battery-Guide-s/142.htm
Management
- While specs say 250 cycles for 15A discharge - Multiple thousands of cycles are possible when charged to 80% and drained to 30%. - [2]