18650 Cells: Difference between revisions

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*10A discharge, self-protection circuit inside.
*10A discharge, self-protection circuit inside.
*3.7V
*3.7V
*3 Ahr
*18 minutes of 37W
*10W for 1 hour
*30 of these give 1 kWhr


=Specs=
=Specs=

Revision as of 17:48, 3 February 2019

https://www.google.com/search?q=18650+cells&client=ubuntu&hs=KUs&source=univ&tbm=shop&tbo=u&sa=X&ved=0ahUKEwj8xPLHwdLfAhULtIMKHTQ3ADUQsxgIKw&biw=1438&bih=738

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

Specs

  • Note actual spec from a buyer on Amazon - [1]

Reviews

Management

  • While specs say 250 cycles for 15A discharge - Multiple thousands of cycles are possible when charged to 80% and drained to 30%. - [2]

Cost

  • From <$1 to $7 each - so choose wisely -
  • Cheapest - [3]
  • Best - Samsung 30Q - 3000 mAh - $3 in bulk - [4]
  • These appear to be on spec at 3000 mAh - [5].
  • Cycle life and specs - [6] - 250 cycles to 70% of rated
  • 1000 cycles at 6A discharge rate bottoming at about 60% capacity for 2000 cycles? - [7]. So these last pretty long.