All Questions
20 questions
0
votes
2
answers
84
views
Can an offgrid inverter work directly from the MPPT charge controllers, without batteries? [closed]
I have a 17kW capacity solar panel system, split into 4 divisions, each one connected to a Victron MPPT charge controller.
Also, I have a 6000VA Victron offgrid inverter.
On a bright, cloudless day, ...
- 15
0
votes
0
answers
36
views
1 Solar panel to 2 mppt, to 2 separated batteries
In my motorhome I have 1 solar panel (500w) to a one victrom mppt 30A, to one battery 100A of lifePo4.
Now I need more battery because i have a new 12v fridge, so I bought other battery 230A lifepo4, ...
- 1
1
vote
0
answers
81
views
Why does solar current drop when charging a battery with a MPP controller?
I'm trying to build a model using a PV panel to charge a battery (a buck converter in between). I use a MPP controller to track the maximum power point. The solar irradiance and temperature are set as ...
- 11
0
votes
1
answer
118
views
Would an MPPT module that charges Li-po batteries work with a NiMH battery?
I'm trying to charge a 9 V, 300 mAh NiMH battery with a 6 V solar panel using a 12 V MPPT module for which the description says it's for Li-po batteries. Would it work with NiMH batteries?
0
votes
1
answer
231
views
MPPT solar charge controller - battery charge current at MPP
I am currently planning to design an MPPT solar charge controller and I am trying to follow a reference design from TI - TIDA 010042.
I am planning to use arduino as the microcontroller for this ...
- 69
0
votes
0
answers
147
views
Using a boost converter controller in an MPPT application
I am hoping to use a standard synchronous boost converter (LTC3786) for MPPT controlled solar panel to battery.
Nearly all applications I see make reference to adjusting the PWM DC to control input ...
- 1
0
votes
1
answer
44
views
Need help with maximum safe load on a C10 battery in a Solar power system
I have a solar system with 20Amps/12v MPPT, 150ah/12v C10 battery, 500watts/24v panel and 1000va inverter. I have a few questions.
Can I use a 750w cloth iron on this for 30 minutes? As per my ...
0
votes
0
answers
38
views
Enhancement and MPP of a basic Al-air battery with saline electrolyte
I created a simple Al-air battery in oceans using Aluminum and graphite electrodes with ocean water as the electrolyte. There is no electrical separation between the electrodes due to design ...
- 157
1
vote
2
answers
170
views
Lead-acid battery charger with solar input
I have a 12 V, 24 Ah lead-acid battery that I have to charge using a solar panel.
My initial solution to the problem was to implement a buck or a buck-boost DC-DC converter with MPPT and control the ...
- 59
1
vote
1
answer
607
views
Some questions about the CN3722 solar charging IC and its MPPT setting
I'm currently working on a project where I have to charge batteries by solar. For this reason I chose the CN3722 IC. Since I want to create my own PCB with all the necessary parts I had to read the ...
- 159
0
votes
0
answers
40
views
Is it safe to have two batteries in series on a solar panel system with 14.22v and 14.46v?
I have two batteries in series plugged to a solar panel system.
In parallel they used to balance each other perfectly.
But now i'm trying to have a 24v system and I have them in series.
They ...
- 255
0
votes
1
answer
98
views
how the battery behaves in this diagram
My question is this. I'm using this ic mppt SM72445 along with a 250 watt solar panel, mppt output configured to 50.4 or 51 volts, 12-cell lithium-ion battery pack and bms, if the load is less than ...
2
votes
4
answers
743
views
MPPT lead-acid overvoltage
As I understand it, an MPPT algorithm adjusts the charging voltage until it finds the point where maximum power is delivered into the battery.
If a 12 V lead-acid battery is used, is there an upper ...
- 98
1
vote
3
answers
2k
views
Can I use a MPPT Solar Controller to charge my auxillary 12V AGM Battery from the car battery/alternator?
I have a RedArc solenoid and a Victron 75/15 Smart Solar Controller. Can I use the combination of these two units to charge an 12V AGM Deep Cycle auxiliary battery from the car battery/alternator ...
- 13
1
vote
0
answers
501
views
Can multiple microinverters, connected in parallel to a single source, become unstable?
Just to get this out of the way, I realize that what I'm exploring is well outside the design specs for the hardware I'm using. Now that that's out of the way:
I have a large lithium battery module ...
- 676
2
votes
1
answer
5k
views
How to efficiently charge 48V battery-motor system with solar panels
I'm wondering how to efficiently charge and use the following system with standard 18V solar panels:
48V lead-acid battery
1kW electric motor
To charge the battery with either PWM or MPPT, the solar ...
- 131
-1
votes
1
answer
114
views
Solar and Batteries [closed]
I want to ask a few questions that relate to solar panels and the charging of batteries. I have looked all over the internet for answers but have not found anything that answers my concerns. The most ...
- 13
0
votes
2
answers
218
views
MPPT display voltage vs actual battery level
When I have a high load on my system the battery voltage on the MPPT display will go down. It usually sits between 12.8v - 13.1v however if the load is high (it is currently on 8amps) the battery ...
- 33
1
vote
2
answers
693
views
Solar battery charging, solar IV curve
I am thinking of making a solar battery charger for some NiMH batteries but am a bit confused as to how make sense of a solar panels IV curve in the application of battery charging.
1) For a direct ...
- 21
1
vote
4
answers
11k
views
Making my 18650 30kW Battery array
I put this in the comments of my last question but I realised that might not get many eyeballs so I will ask it here.
I have have been thinking of making a battery using 18650's.
the battery ...
- 77