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projects:biking:helmet [2020/04/29 11:11]
admin
projects:biking:helmet [2020/05/26 08:51] (current)
admin
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 Lighting 2.0 Lighting 2.0
 +
 +==== 4000mah battery ====
 +Aliexpress has some 4000mah batteries for $9.
 +
 +Maybe do a magnetic cable from a 12V battery with usb plugs? https://​www.aliexpress.com/​item/​4000077722049.html?​spm=2114.search0302.3.10.18595756W5aofK&​s=p&​ws_ab_test=searchweb0_0,​searchweb201602_0,​searchweb201603_0,​ppcSwitch_0&​algo_pvid=be82760d-1cd7-4aaf-9908-42a644bb8fd8&​algo_expid=be82760d-1cd7-4aaf-9908-42a644bb8fd8-1
 +
 +==== 12V Power ====
 +Awesome, just use a car jump starter. A little bulky
 +  * Maybe not charging on USB is ok. It's infrequent.
 +  * $80 at harbor freight for 12000 Mah.
 +
 +If don't do a jump start battery, can get $30 battery pack when reducing capacity down to 3000mah.
 +
  
 ==== Legal ==== ==== Legal ====
projects/biking/helmet.1588183885.txt.gz · Last modified: 2020/04/29 11:11 by admin