I want to make my raspberry pi portable, is it safe to run it from battery's?
I want to make my raspberry pi portable, is it safe to run it from battery's?
Sorry, but I could not resist the itch.. Today I ordered a RPi3 board and plan to use it as permanent bound to the grid. I think that the 5V power banks sold everywhere will work properly and also filter the intermittent power downs (easiest way to restart the router 
) and the high consumption spikes.
Will have to test if such power bank in between will neglect all the above issues.
500mA-1A continuous drain assumes that 2.5-5A spikes should be ok.
Anyway... I wanted to write that it is shame to have so many shields and not to have proper power. I am a little disappointed that I read about such issues. Currently I'm using another brand of single board computer which accepts 9 and 12V power supply and has battery charger/step up supply (according to specifications it is safe to use 6-15V). Battery (3.7V) is advised if low quality PSU and GSM module (or other high spike accessories) are used.
Tested it also with "rusty" GSM battery that was so empty that it was unable to start charging and the current was auto adjusted to the battery specifications. Can run from the 3.7 GSM battery.
I am starting to think that the quad 64bit CPU Win10 board might not be as good as I initially thought.
The PiBorg (described in the upper posts) is another good idea, (I admit-never worked with Pi) but the 15% CPU load does not ring a bell. I thought that the CPU frequency is more important than the load. Anyway the old Pi CPU has rating as the Pi Zero (assuming not lot of additional power is required) which is 160mA (Wikipedia). If CPU is using low multiplier than it can probably last longer than the regular.
The Sanyo batteries are also a good choice but probably has to be considered that NiMH batteries have normal voltage around 1.2 volt (average and 4*1.2=4.8) and the OKI chip is rated 7-36V so the chip might be stepping down only the initial period and then most of the time doing nothing (5mA consumption is neglectable). Anyway over voltage protection is mandatory (4*1.4=5.6 and it is a little uncertain if all boards will handle it). 0.1 capacity (and less) drain per hour is nearly ideal condition. For car battery- the Borg is perfect. With the Borg also regular batteries are applicable.
The old brand, that I currently use, tested comparable board and the power was less than 1W continuous which is nearly as Pi Zero.
Battery pack for Borg: 2.7*1.2*4=13W
Pi Zero is less than 1W. So test has to be valid.
Anyway- good night (have to sleep. it's 1am local) and sorry if i offended someone. Pi is nice, but doesn't seem to be portable and jerk proof 
. When I test it I might apologize
Sorry, but I could not resist the itch.. Today I ordered a RPi3 board and plan to use it as permanent bound to the grid. I think that the 5V power banks sold everywhere will work properly and also filter the intermittent power downs (easiest way to restart the router ) and the high consumption spikes.
Will have to test if such power bank in between will neglect all the above issues.
500mA-1A continuous drain assumes that 2.5-5A spikes should be ok.
Anyway... I wanted to write that it is shame to have so many shields and not to have proper power. I am a little disappointed that I read about such issues. Currently I'm using another brand of single board computer which accepts 9 and 12V power supply and has battery charger/step up supply (according to specifications it is safe to use 6-15V). Battery (3.7V) is advised if low quality PSU and GSM module (or other high spike accessories) are used.
Tested it also with "rusty" GSM battery that was so empty that it was unable to start charging and the current was auto adjusted to the battery specifications. Can run from the 3.7 GSM battery.
I am starting to think that the quad 64bit CPU Win10 board might not be as good as I initially thought.
The PiBorg (described in the upper posts) is another good idea, (I admit-never worked with Pi) but the 15% CPU load does not ring a bell. I thought that the CPU frequency is more important than the load. Anyway the old Pi CPU has rating as the Pi Zero (assuming not lot of additional power is required) which is 160mA (Wikipedia). If CPU is using low multiplier than it can probably last longer than the regular.
The Sanyo batteries are also a good choice but probably has to be considered that NiMH batteries have normal voltage around 1.2 volt (average and 4*1.2=4.8) and the OKI chip is rated 7-36V so the chip might be stepping down only the initial period and then most of the time doing nothing (5mA consumption is neglectable). Anyway over voltage protection is mandatory (4*1.4=5.6 and it is a little uncertain if all boards will handle it). 0.1 capacity (and less) drain per hour is nearly ideal condition. For car battery- the Borg is perfect. With the Borg also regular batteries are applicable.
The old brand, that I currently use, tested comparable board and the power was less than 1W continuous which is nearly as Pi Zero.
Battery pack for Borg: 2.7*1.2*4=13W
Pi Zero is less than 1W. So test has to be valid.
Anyway- good night (have to sleep. it's 1am local) and sorry if i offended someone. Pi is nice, but doesn't seem to be portable and jerk proof . When I test it I might apologize