killerniceguy
1 µW
- Joined
- Feb 18, 2018
- Messages
- 2
I did search but perhaps I am not asking the right question...I am also pretty new to this stuff and eager to learn, clearly there are some gaps in my knowledge.
I have two Ebike batteries (13s4p and 14s4p 18650 with BMS) I would like to use to run a 12v powered cooler while I am traveling with the family this summer. I could easily pick up a sealed 12V AGM battery but I would like to see if this is possible and or a good idea (maybe this is a bad idea...).
The cooler I plan to get is:
https://www.dometic.com/en-us/us/products/food-and-beverage/cooling-boxes/electric-coolers/dometic-cfx-65w-_-152179
Cleary I will have to step down the voltage to 12V. Something like this:
http://www.current-logic.com/shop/index.php?main_page=product_info&cPath=6&products_id=259
will step it down to 12V and also meet my amperage requirements of roughly 5amps at startup. The cooler typically pulls >1Ah during operation.
After doing some reading my concern is the power coming from the converter will be modified sine wave and not very good for the compressor in the cooler. Is there a way around this? Is there way to make it a pure sine wave?
Other info and assumptions that may be important:
I have a 72V Cycle Satiator I use to charge the batteries
I do not want to rebuild the packs in anyway - I will use them as ebike batteries when I return from this trip
I am not planning to charge these packs with solar although if there was an easy way without rebuilding the packs I would.
I figure I get about 10Ah from each pack, if I convert to 12v I should see about 40Ah per battery less the inefficiency of conversion right?
The cooler has a low voltage cut off of about 10.7V, will this factor into available power reserves from the 18650 packs as the cutoff was put in place for Pb batteries?
I appreciate any input on this project
I have two Ebike batteries (13s4p and 14s4p 18650 with BMS) I would like to use to run a 12v powered cooler while I am traveling with the family this summer. I could easily pick up a sealed 12V AGM battery but I would like to see if this is possible and or a good idea (maybe this is a bad idea...).
The cooler I plan to get is:
https://www.dometic.com/en-us/us/products/food-and-beverage/cooling-boxes/electric-coolers/dometic-cfx-65w-_-152179
Cleary I will have to step down the voltage to 12V. Something like this:
http://www.current-logic.com/shop/index.php?main_page=product_info&cPath=6&products_id=259
will step it down to 12V and also meet my amperage requirements of roughly 5amps at startup. The cooler typically pulls >1Ah during operation.
After doing some reading my concern is the power coming from the converter will be modified sine wave and not very good for the compressor in the cooler. Is there a way around this? Is there way to make it a pure sine wave?
Other info and assumptions that may be important:
I have a 72V Cycle Satiator I use to charge the batteries
I do not want to rebuild the packs in anyway - I will use them as ebike batteries when I return from this trip
I am not planning to charge these packs with solar although if there was an easy way without rebuilding the packs I would.
I figure I get about 10Ah from each pack, if I convert to 12v I should see about 40Ah per battery less the inefficiency of conversion right?
The cooler has a low voltage cut off of about 10.7V, will this factor into available power reserves from the 18650 packs as the cutoff was put in place for Pb batteries?
I appreciate any input on this project