Lithium 3.7 Volt Battery
#1
Is this a compatible battery and the correct battery connector for the 'Pine 64':
3.7V Polymer Battery 357090 3000mAh PCM Rechargeable 
I am not talking about the real time clock, but to power the computer when not connected to a USB port.
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#2
(12-22-2015, 12:27 PM)Ron Piggott Wrote: Is this a compatible battery and the correct battery connector for the 'Pine 64':
3.7V Polymer Battery 357090 3000mAh PCM Rechargeable 
I am not talking about the real time clock, but to power the computer when not connected to a USB port.

This type of Lipo battery will work. Please make sure that the connector is correct (3pin PH type) and polarity position is correct. We prefer to use the Lipo battery has temperature sensor and also self protection capability for safety reason.
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#3
(12-23-2015, 02:51 AM)tllim Wrote:
(12-22-2015, 12:27 PM)Ron Piggott Wrote: Is this a compatible battery and the correct battery connector for the 'Pine 64':
3.7V Polymer Battery 357090 3000mAh PCM Rechargeable 
I am not talking about the real time clock, but to power the computer when not connected to a USB port.

This type of Lipo battery will work. Please make sure that the connector is correct (3pin PH type) and polarity position is correct. We prefer to use the Lipo battery has temperature sensor and also self protection capability for safety reason.

Is this the correct '3pin PHP type' needed?
http://www.ebay.ca/itm/201477249384?_trk...EBIDX%3AIT
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#4
(12-26-2015, 12:31 AM)Ron Piggott Wrote:
(12-23-2015, 02:51 AM)tllim Wrote:
(12-22-2015, 12:27 PM)Ron Piggott Wrote: Is this a compatible battery and the correct battery connector for the 'Pine 64':
3.7V Polymer Battery 357090 3000mAh PCM Rechargeable 
I am not talking about the real time clock, but to power the computer when not connected to a USB port.

This type of Lipo battery will work. Please make sure that the connector is correct (3pin PH type) and polarity position is correct. We prefer to use the Lipo battery has temperature sensor and also self protection capability for safety reason.

Is this the correct '3pin PHP type' needed?
http://www.ebay.ca/itm/201477249384?_trk...EBIDX%3AIT

Yes, this is the correct one.
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#5
http://www.ebay.ca/itm/1000-pcs-PH-2-0mm...XQC-tTD~MA

Buy a 1,000 and sell them at $0.25 each, double your money while saving your customers time and money since the tool to crimp the connector cost $60 and the circuit board part is thrown away, if they buy the pair on EBay.

http://www.ebay.ca/itm/201477249384?_trk...EBIDX%3AIT
Bay is $2.46+$1.80 shipping!
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#6
(12-27-2015, 05:01 PM)KevinA Wrote: http://www.ebay.ca/itm/1000-pcs-PH-2-0mm...XQC-tTD~MA

Buy a 1,000 and sell them at $0.25 each, double your money while saving your customers time and money since the tool to crimp the connector cost $60 and the circuit board part is thrown away, if they buy the pair on EBay.

http://www.ebay.ca/itm/201477249384?_trk...EBIDX%3AIT
Bay is $2.46+$1.80 shipping!

We have worked with LiPo battery vendor to customize a high power (8000mAH) and self protect version, this battery will be available at Pine64 store soon. User can select this add-on on their crowdfunding pledge.
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#7
(12-27-2015, 06:48 PM)tllim Wrote: We have worked with LiPo battery vendor to customize a high power (8000mAH) and self protect version, this battery will be available at Pine64 store soon. User can select this add-on on their crowdfunding pledge.

I am going to wait to see how much money you are charging for this.  

Am I correct that I will receive an e-mail to prompt me for my shipping details and any add ons I want to buy?

I have a spare CR2032 "Real Time Clock" battery from when I just fixed a laptop for a friend.
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#8
(12-27-2015, 10:29 PM)Ron Piggott Wrote:
(12-27-2015, 06:48 PM)tllim Wrote: We have worked with LiPo battery vendor to customize a high power (8000mAH) and self protect version, this battery will be available at Pine64 store soon. User can select this add-on on their crowdfunding pledge.

I am going to wait to see how much money you are charging for this.  

Am I correct that I will receive an e-mail to prompt me for my shipping details and any add ons I want to buy?

I have a spare CR2032 "Real Time Clock" battery from when I just fixed a laptop for a friend.

When the kickstarter campaign ended, you will received an email and you can decide whether to buy from us or pick up from eBay. We still provide the hardware DIY information.

For the RTC battery, the CD2032 is a good choice and can runs for 2-3 years (assume the battery still fresh).
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#9
I'll have to disagree with tllim here. That battery is rated for 500mA max, which at best means somewhat<500mA continuous and at worst substantially less - misstating lipo battery specs is common even for branded cells, let alone generic no-name ones off of ebay. The likelihood that Pine64 will only ever consume < 500mA is 0. As such, you'll be using a substantially under-spec battery. Keep in mind that lipo is *not* a safe chemistry - exceeding the discharge rating is asking for a fire.

The correct way to establish what battery you need is to take the board + all the peripherals you intend to attach, run it at max load and record peak current plus, say, 95th percentile high and use that to qualify the battery system. No one can tell you what your high is, since we don't know what power-drawing peripherals you're going to attach. Alternatively, use a safe chemistry battery instead of lipo to begin with so the penalty for exceeding the power envelope is a brownout or reboot, rather than a raging inferno and the disconsolate wailing of innocent children, spouses and pets.

-p

The above is in reference to the ebay battery. Although I have no knowledge of the 8000mAh battery pine64 is having designed, it's much more likely to be workable - assuming peak 2A that's just 0.25C (google C rating if you're curious) which is eminently within reach even for el-cheapo lipos. It's unlikely to be cheap, certainly nowhere near as cheap as an a priori unsuitable, under-spec mystery cell off of fleabay, but you need to factor in the cost of a new house/family into the equation Wink If you're going to run marginal lipos, at least get a fireproof charging bag (rc stores sell them usually) to run the whole thing in for some measure of safety.

-p
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#10
I was wondering if we use 3.7V Li Battery , then
1. will pine64 charge it once pine64 is connected to a usb power source such as computer or power bank?
1.1 if so, is there a build-ii overchage protection in pine64?
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