Battery Diagram needed.
- Thread starter Joshuacj1
- Start date
sunshine_eggo
Victron's little biatch
What you propose is very atypical. What is the intended use?
DIYrich
Solar Wizard
Looks like he us trying to build a large battery with one bms. The amps will be limited by the bms.
I plan on having many 48 vdc loads and 17s battery bank gives me the ability to maintain a sustained voltage above 48 volts for a longer period of time. And yes I want to minimize components such as BMS for a simplicity of potentiality of things to go wrong.
48vdc direct loads will be
Hot water heating element for hot water tank
Pure DC 48 v Mini split
Charging my 48vdc bike
DC refrigerator
Phone and electronic device charging with 48 vdc direct panel mount USB chargers.
I found this awesome little device to be able to charge DC direct at 96% efficiency instead of going from DC to AC then back to DC.
48vdc direct loads will be
Hot water heating element for hot water tank
Pure DC 48 v Mini split
Charging my 48vdc bike
DC refrigerator
Phone and electronic device charging with 48 vdc direct panel mount USB chargers.
I found this awesome little device to be able to charge DC direct at 96% efficiency instead of going from DC to AC then back to DC.
58V input DC/DC adjustable converter constant-voltage or constant current for battery charging, supercap charging, LED control, laser diode power, magnet control, PST-D60CP.
Constant voltage/constant current DC/DC converters for battery charging and LED control
www.powerstream.com
wpns
Solar Joules are catch and release
That charger has a maximum input voltage of 58 volts, and has a maximum output current of 3.5A, not clear what the power rating is…
littleharbor2
Solar Wizard
The end if this list shows 4p16s layouts
Last edited:
17s is a good idea if one wants to increase energy storage, but can't afford another batch of 16 cells. I wish I thought about it at the beginning of making my system. I'd probably have started with 17S.
But my current requirements are high. I also like the redundancy of multiple BMSes. And the safety of each battery being fused separately.
4p17s that would be a monster amount of energy under control of a single BMS. Also best bang for your buck in BMSes is IMO in 200 A range. Once you go to 400A+ BMSes. They suddenly get pretty expensive.
So I'd do 4* 17s batteries each with it's own bms.
But my current requirements are high. I also like the redundancy of multiple BMSes. And the safety of each battery being fused separately.
4p17s that would be a monster amount of energy under control of a single BMS. Also best bang for your buck in BMSes is IMO in 200 A range. Once you go to 400A+ BMSes. They suddenly get pretty expensive.
So I'd do 4* 17s batteries each with it's own bms.
wpns
Solar Joules are catch and release
Yeah, unless you are OK with a current of less than 200A from your 1216AH battery, I'd also recommend four individual batteries, each with it's own BMS.
The other problem with 4P cells is that if one cell goes bad you might never know it, and if one cells shorts, the 3 in parallel with it will dump enough current to blow everything up.
The other problem with 4P cells is that if one cell goes bad you might never know it, and if one cells shorts, the 3 in parallel with it will dump enough current to blow everything up.
sunshine_eggo
Victron's little biatch
Fixed.
My inverter can do UP TO 95% efficiency, but it doesn't most of the time because I'm not operating at 25-30% rated power.
Thanks. That's what I needed to see. Appreciate it.The end if this list shows 4p16s layouts
Similar threads
