Power: Supply, Connectors, Voltage levels, Batteries

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Power Supply

1) Particles

2) Sensor Boards

3) Serial Board / Power Board

4) XBridge

Batteries

There are several battery types on the market. Each of them has its pros and cons. The below table should give you a short impression what is best for your use of Particle computers.

Type Pros Cons Advice
NiMH rechargeable
  • Cheap, easy to get, up to 800mAh(AAA) capacity
  • standard recharging unit, high-speed recharging
  • can be soldered directly onto Particle
  • less/no aging effect, can be used in applications that should run for years
  • larger than Lithium-rechargables or batteries with same capacity
  • sensitive to long periods of low temperature and high temperature drifts
  • Use good recharging unit, e.g. from GP
NiCd rechargeable
  • simple to get, standard recharging unit
  • less sensitive to long periods of low temperature and high temperature drifts
  • memory effect, low energy
  • use as a replacement for NiMH types at outdoor apps.
Lithium rechargeable
  • high capacity, available in flat packs
  • less/no memory effect
  • aging effect makes the cell unusable after 3 years, significant drop in storage after one year
  • requires additional circuit for recharging or special recharge unit
  • dangerous if not handled carefully
  • can start burning at higher temperatures
  • very toxic
  • often voltages >3.3V
  • higher weight than NiMH with same capacity
  • only for professionals
  • don't forget to order the according recharging unit with your battery
Lithium batteries
  • very high capacity
  • simple to handle
  • intended to be soldered on board
  • not rechargeable
  • low discharge, low aging
  • for special applications
Lithium coin cells
  • very small
  • simple to handle
  • holders available off-the-shelf
  • not rechargeable
  • very low current (typically 1-10mW)
  • parallel use of multiple cells recommended
  • use high current types
Zinc/alkaline batteries
  • for our use similar to lithium bats
  • for our use similar to lithium bats