Hi all,
I've been lurking around the forum a few months, reading up as much as i can in regards to how to build a smallish battery pack to feed into a inverter/charger to increase self consumption.
Given there's so much information scatted across so many different threads, i thought it be a good sanity check to write up my first post to confirm some of the ideologies contained in this forum as part of my research.
I am looking at Jehu's PCB system in a 48v configuration (2PCB's in series), combined with LGDAS31865 which average around 2200 - 2300mah.
The inverter/charger i am currently looking at is a Victron Multiplus II - GX which has a maximum charge of 32A.
To make a ~2.5kw/h pack suitable to say 50A in a 14Sconfiguration the maths would be
Voltage:
7*4.2v=29.4v (Single PCB) and58.8v (2 PCB in series)
Capacity:
2200mah * 20 = 44000mah ~ 2.5kwh
I'm a little confused on the parallel side of the equation as although a max discharge exists at 3A , you typically don't want to be anywhere near that correct?
Nominally around 0.5a would mean a hell of alot of cells (pcb's).
I've been lurking around the forum a few months, reading up as much as i can in regards to how to build a smallish battery pack to feed into a inverter/charger to increase self consumption.
Given there's so much information scatted across so many different threads, i thought it be a good sanity check to write up my first post to confirm some of the ideologies contained in this forum as part of my research.
I am looking at Jehu's PCB system in a 48v configuration (2PCB's in series), combined with LGDAS31865 which average around 2200 - 2300mah.
The inverter/charger i am currently looking at is a Victron Multiplus II - GX which has a maximum charge of 32A.
To make a ~2.5kw/h pack suitable to say 50A in a 14Sconfiguration the maths would be
Voltage:
7*4.2v=29.4v (Single PCB) and58.8v (2 PCB in series)
Capacity:
2200mah * 20 = 44000mah ~ 2.5kwh
I'm a little confused on the parallel side of the equation as although a max discharge exists at 3A , you typically don't want to be anywhere near that correct?
Nominally around 0.5a would mean a hell of alot of cells (pcb's).