Hello everyone, i m new as a writer on this forum,
I m starting a small storage batteryfor outdoor lights powered by 2solar panels ( 2x250W ) and with 5-7 small led projector (12V andabout 7W each )
My goal is to have outdoor light when it is dark ( most in winter ) during 2 or 3 hours, i will add a prsence detector ( detect movement ) after that.
So i decided to do 4S5P battery's because : first the 14.4 V is near the 12v i need for my lights and with a DC-DC adjustableregulator i can habe the good voltage.
it allow me to place them in small boxesprotected from rain, dust etc, easily....
So my problem is :
I ve done my first battery pack, i use 20 18650 tested cells between 1800 and 2100maH
I ve done my pack, i try a charge of the batterywith the imaxB6 mini, and i have my 16.4v ( from memory ) when charged ( i have a slow voltage loss when charge stop, but it stay to more than 16 if i don't touch the battery )
I try a discharge test ( to have the capacity of the battery ) and the imax stopped it at 2112mah.
Is that normal ?
If i m right, i should have about 7000 - 10000 mah ( it depend capacity of battery ) no ???
I m starting a small storage batteryfor outdoor lights powered by 2solar panels ( 2x250W ) and with 5-7 small led projector (12V andabout 7W each )
My goal is to have outdoor light when it is dark ( most in winter ) during 2 or 3 hours, i will add a prsence detector ( detect movement ) after that.
So i decided to do 4S5P battery's because : first the 14.4 V is near the 12v i need for my lights and with a DC-DC adjustableregulator i can habe the good voltage.
it allow me to place them in small boxesprotected from rain, dust etc, easily....
So my problem is :
I ve done my first battery pack, i use 20 18650 tested cells between 1800 and 2100maH
I ve done my pack, i try a charge of the batterywith the imaxB6 mini, and i have my 16.4v ( from memory ) when charged ( i have a slow voltage loss when charge stop, but it stay to more than 16 if i don't touch the battery )
I try a discharge test ( to have the capacity of the battery ) and the imax stopped it at 2112mah.
Is that normal ?
If i m right, i should have about 7000 - 10000 mah ( it depend capacity of battery ) no ???