I found this forum and thought this might be a good place to ask a question or two and haven't found an answer while looking around.
I am looking at getting a power system to run a CPAP machine and a couple cell phones as necessary when away from power such as camping, etc.. I am looking at two different ideas.
First off the CPAP
On the power adapter from the wall it reads 12v 5A output. I haven’t picked up a killawatt yet, but I did find someone online with the same unit that said it used 8A at startup an .4 I believe throughout the rest of the night with a use of 40Wh total. Once I can get a killawatt I'll check mine. I wioll be getting a dc cord which should use less power than the ac adapter.
Option 1 - Purchased Power Station with this info
--Capacity: 300W/80000mAh
--9 Interfaces: 1x 110V AC Outlet, 3x DC Ports, 3x USB-A Ports, 1x USB-C Port, 1x Wireless Charging
--3 Charging Methods: solar panel, wall plug, car charger
--LED lighting, Built-in voltage regulator
-Input Recharging: Adapter 15V/3A; Solar panel 13V-22V/3A -Fully Charged Time: About 4-8 hours.
--USB Output: USB-A: 5V/2.1A; USB-A(QC 3.0): 5V-9V/2A; USB-C: 5V-9V/2A
--DC Output: DC55x21mm 12V/10A;DC55x25mm 24V/4A.
--AC output: 110V±10% frequency 60HZ ±5%
Rated 4.5 out of 5 by 49 people. Cost $175.09
Option2 - DIY build
7S 5P 24v battery pack using New Panasonic NCR18650B cells 3400mah 87.5Wh per series bank total 437.5 Wh
60A1400W BMS
DC to DC converter to get 12V, USB 3 outlet to provide 5v 3A output
Total cost roughly $275 after case, charge controller, etc
For charging I would be looking at solar for the most part and charging when they get to about 50%.
Is it better to purchase something prebuilt or to build it yourself?
My biggest concern is reliability and longevity. From the building cost it seems I would get twice the size system for less than double the cost. Am I missing something?
Should this be built as a 12v instead of a 24v system and are there better batteries for this use
Thanks
Bob
I am looking at getting a power system to run a CPAP machine and a couple cell phones as necessary when away from power such as camping, etc.. I am looking at two different ideas.
First off the CPAP
On the power adapter from the wall it reads 12v 5A output. I haven’t picked up a killawatt yet, but I did find someone online with the same unit that said it used 8A at startup an .4 I believe throughout the rest of the night with a use of 40Wh total. Once I can get a killawatt I'll check mine. I wioll be getting a dc cord which should use less power than the ac adapter.
Option 1 - Purchased Power Station with this info
--Capacity: 300W/80000mAh
--9 Interfaces: 1x 110V AC Outlet, 3x DC Ports, 3x USB-A Ports, 1x USB-C Port, 1x Wireless Charging
--3 Charging Methods: solar panel, wall plug, car charger
--LED lighting, Built-in voltage regulator
-Input Recharging: Adapter 15V/3A; Solar panel 13V-22V/3A -Fully Charged Time: About 4-8 hours.
--USB Output: USB-A: 5V/2.1A; USB-A(QC 3.0): 5V-9V/2A; USB-C: 5V-9V/2A
--DC Output: DC55x21mm 12V/10A;DC55x25mm 24V/4A.
--AC output: 110V±10% frequency 60HZ ±5%
Rated 4.5 out of 5 by 49 people. Cost $175.09
Option2 - DIY build
7S 5P 24v battery pack using New Panasonic NCR18650B cells 3400mah 87.5Wh per series bank total 437.5 Wh
60A1400W BMS
DC to DC converter to get 12V, USB 3 outlet to provide 5v 3A output
Total cost roughly $275 after case, charge controller, etc
For charging I would be looking at solar for the most part and charging when they get to about 50%.
Is it better to purchase something prebuilt or to build it yourself?
My biggest concern is reliability and longevity. From the building cost it seems I would get twice the size system for less than double the cost. Am I missing something?
Should this be built as a 12v instead of a 24v system and are there better batteries for this use
Thanks
Bob