Hi Everyone,
I'm going to be away from wall power for 10 days at the BSA National Jamboree. I want to bring a 12V SLA battery to charge my smart phone at night and possibly a tablet, too, but not as frequently. They advise that there will be charging stations, but I'm not going to rely on that.
I'm going to go device > car charger > car charger socket with alligator clips > 12V SLA.
My car charger's output is 5V and 950mA.
Where I'm stumped is the size battery I will need. I will be hiking in from the drop off area to our camp site, so I need to be somewhat conservative with the size.
Any help would be greatly appreciated.
Rich
EDIT:
OK, maybe I just answered my own question. My phone's battery is 2100 mAh. Do I just divide that number into the mAh of the battery to get the number of charges? For example: a 7000 mAh battery would charge the battery from 0 to full capacity +/- 3.33 times?
I'm going to be away from wall power for 10 days at the BSA National Jamboree. I want to bring a 12V SLA battery to charge my smart phone at night and possibly a tablet, too, but not as frequently. They advise that there will be charging stations, but I'm not going to rely on that.
I'm going to go device > car charger > car charger socket with alligator clips > 12V SLA.
My car charger's output is 5V and 950mA.
Where I'm stumped is the size battery I will need. I will be hiking in from the drop off area to our camp site, so I need to be somewhat conservative with the size.
Any help would be greatly appreciated.
Rich
EDIT:
OK, maybe I just answered my own question. My phone's battery is 2100 mAh. Do I just divide that number into the mAh of the battery to get the number of charges? For example: a 7000 mAh battery would charge the battery from 0 to full capacity +/- 3.33 times?
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