RJ Howell wrote:Here you see the Atempower 20 amp solar charge controller / DC to DC charger. Several Amazon reviewers say it won't handle lifepo4, Atempower says the profile for Lifepo4 and Lion are the same more or less and it will work.
Do you have the actual spec sheet? Couldn't find one in a couple searches.. I understanding is older Li-on's only charged to 4.1v where as Lipo wants 4.2v. I've been told newer Li-on chargers do go to 4.2v.. Other real curious part is charge rate (i.e. 1C )?
I like the price on the 30amp unit! Since my Renogy Solar / DCDC died.. I'm back to my old 20a DCDC & a separate solar charger..
Funny part about that, the voltages listed in the spec sheet / users guide are from the Australian version, and have charging at 14.4v and lists Lifepo4. Their advertising copy for the US version shows 14.4v for Lion.
I am honestly having trouble understanding the email from Chins as, well Chinese to Engiish loses a LOT in translation, but it looks like charging voltage ranges is 14.2 to 14.6 where the internals of the battery cut off voltage should it get an overvoltage situation. Between that and the dozens of reviews of this unit, it does not seem to be a danger to the battery, it just might not charge it properly.
Honestly if this doesn't pan out function wise, I am going to upgrade to a 40 amp DC to DC charger, don't want to overtax my alternator as I already push it kind of hard with the winch... And then just use the provided 20 amp solar charge controller that came with my panels since it is rated for Lifepo4.
There seems to be a bit of a conflict from reviewers as to whether or not this device works for Lifepo4, several say no, several say it doesn't start charging until the batter bank is down about 10 to 15 percent which is still fine, and some say absolutely no issues. So which is it? I limited my search to verified buyers and verified sample testers. Basically people that actually got the thing and tried it, not just astroturfers...
SO I will go ahead with the install and try out. I still have the 20 amp solar and can get a Renogy DC to DC charger, just not super impressed with them either. Heard of reliability and configuration issues with those... I know Renogy is the big popular solar company, but I see just as many people saying they don't work either. Maybe people just like to complain...
Anyway, so that is the electrical, kind of. I still need to insulate / headliner the camper shell, and will then permanently attach the 110v outlet to the inside of the cap, and likely an extension to an outlet strip. Not sure about that. Need to if I have power at camp, be able to plug in a heater / air conditioner, and maybe run my laptop and USB chargers off of 110v taking load off of my battery rig.
As to the wedge / double wedge design pop up. I know there are advantages in high wind situations, like not getting pushed around when beach camping with a constant gulf breeze / wind at night. I am a pretty big guy though, and I do NOT want to feel claustrophobic. I can do small-ish spaces, but for example I went to a LOT of hassle to cut down my bed to be sure I didn't hit the ceiling / had headroom. My family had a VW Westfalia camper van with the wedge style pop top / sleeper when I was a kid and even back then the area by the feet bugged me.
Maybe wedge it at the back and point the tail of the truck into the wind so the overcab sleeper still has lots of room.
I think the big thing, at least at first, is how to set up the pop up system so that it doesn't leak. I assume you overlap the fabric over the ouside edge of the lower portion of the camper somewhat so water running down has no entry point...