MPPT controller what is?? "12V/24V lead acid, 3 strings/6 strings ternary lithium battery, 4 strings/8 series lithium iron phosphate, can be set"
- Thread starter coachgeo
- Start date
MichaelK
Solar Wizard
Some of it seems like gibberish, and some it makes some sense. Is it a translation of an advertisement from a foreign country?
"12V/24V" means a charge controller that autosenses whether you connected it to a 12V battery, or a 24V battery, and alters the charging profiles to match.
A "string" is a series connection of either batteries or solar panels to achieve a specific voltage. So, for example, a string of four 6V batteries wired in series makes a 24V battery BANK.
You need to wire at least three 30V solar panels in a series STRING to get the voltage high enough to charge a 48V battery. Since a 48V battery might be charged at as high as 64V, a STRING of just two 30V panels in series would only put out 60V, not high enough to fully charge a 48V battery bank.
Eight 3.2V Li batteries might be wired in a series STRING to create a 24V battery bank. Four parallel strings of eight batteries each would be the same 24V, but 4X the amperage capacity of a bank made with a single STRING.
"12V/24V" means a charge controller that autosenses whether you connected it to a 12V battery, or a 24V battery, and alters the charging profiles to match.
A "string" is a series connection of either batteries or solar panels to achieve a specific voltage. So, for example, a string of four 6V batteries wired in series makes a 24V battery BANK.
You need to wire at least three 30V solar panels in a series STRING to get the voltage high enough to charge a 48V battery. Since a 48V battery might be charged at as high as 64V, a STRING of just two 30V panels in series would only put out 60V, not high enough to fully charge a 48V battery bank.
Eight 3.2V Li batteries might be wired in a series STRING to create a 24V battery bank. Four parallel strings of eight batteries each would be the same 24V, but 4X the amperage capacity of a bank made with a single STRING.
Last edited:
Yes it is Chinglish
??? 48v ??? this is not a 48v controller..... it is 12 or 24v
am using a pair of 100w @12v panels in a string/series.... but tis said to use Voc to calculate so that is closer to 40v in total when these panels are in series.. Since 24v charging needs up to 36v..so that is in spec correct?
granted am intending to have 6 sets of these and plumb their total 24v output into a large bank of approx 500ah @24v .
Last edited:
Finally found the manufactures website and this has gotten even weirder. These are advertised a ten amp MPPT's. One model that has an IR remote included. see solar street lamp controllers in below brochure. (I got these cause in my setup IP68 is very important) . Models I purchased are the CPL 3210 and the CPL 2410. I got three of those figuring that would give me extra remotes.... and I bought three others without the remote. Why remotes?? IP68... no buttons to allow water or dust in.... thus you set them up with an IR remote.
well AFTER the purchase found the brochure eluded too. it list the model with the remote as a 3.3 amp output..... huhhh?? what happened to 10amp?
but weirder.... it list the non remote model.... yup advertised at 10amp mppt and is on brochure that way (and I assumed was same as one above just sold without the remote)..... but it says its output is only 1.5amps?????? what the hell??? and it only works with Lead so apparently it is NOT the same model just without a remote. Luckily Im going to lead buttt I wanted that Li option for future changes and the 1.5amp is just weird.
well AFTER the purchase found the brochure eluded too. it list the model with the remote as a 3.3 amp output..... huhhh?? what happened to 10amp?
but weirder.... it list the non remote model.... yup advertised at 10amp mppt and is on brochure that way (and I assumed was same as one above just sold without the remote)..... but it says its output is only 1.5amps?????? what the hell??? and it only works with Lead so apparently it is NOT the same model just without a remote. Luckily Im going to lead buttt I wanted that Li option for future changes and the 1.5amp is just weird.
Last edited:
ohhhhhhhh....... I think I figured part of it out. the "output current" in the brochure is not about charging..... that is the rated output to the load/lamp wire such as use for street light.... or. electric fence orrr....
Waiting on their reply about the remotes which appear to be different The remote model on the actual case is two different IR spots.. one is labeled IR - S and other is IR - R. On the non remote "included",/ lead only model.... there is an "instruct IR" nothing about S or R and appears to be no remote included. which makes no since.
Last edited:
gave up... only was saving me about 30 bucks to go with the intended plan of three remote models, and three non remote models..... figuring the remotes were universal and the controllers the same 10a mppt IP68 controller.....
.
TOTAL FAIL... as discussed in above post the seller did not have all the information from manufacture to include in the ad.... later discovery showed me the non-remote model are not same at all....... soooooo
eating the thirty bucks..... purchased three more of the better ones (with remote) and am returning the non remote versions for refund. That's a lot of remotes . Ill have to build a rack just to hold the six remotes LOL.
.
TOTAL FAIL... as discussed in above post the seller did not have all the information from manufacture to include in the ad.... later discovery showed me the non-remote model are not same at all....... soooooo
eating the thirty bucks..... purchased three more of the better ones (with remote) and am returning the non remote versions for refund. That's a lot of remotes . Ill have to build a rack just to hold the six remotes LOL.
Last edited:
MichaelK
Solar Wizard
Yes, the 48V sentence was just for informative purposes, to illustrate the math involved. Sorry you didn't understand that.
Trying to save 30$? Good luck with that. Let us know what you think of it after putting it together.
pollenface
Solar Addict
I think 3/6 is referring to 3.7v li-ion cells.
Similar threads
