A 12volt battery setup with a 3000-watt inverter (potentially 250amp draw??????) What happened to the rule of not drawing more than 100amps from a lithium battery (taking into account battery C ratings) You stated that it was a 200AH battery but the important criteria is the voltage, if it was a 24-volt battery then the setup would be closer to well installed (125amp max draw) A good visual installation is great and shows signs of good workmanship, but a technically correct installation is also critical. PS - I don't mean to be harsh as your installation workmanship is gold and says a lot about your pride of workmanship, but I have seen way too many installations that do not take into account the potential damage done to expensive batteries by the initial setup....keeping in mind that if you provide the capacity then customers will use it regardless of what you may have advised them to do. PPS - also a sparkie with 40+ years in the trade.
Hi and thanks for the comment. This battery is 620ah battery with a 300a constant discharge BMS (not 200ah as you mentioned). The battery construction is paralleled 314ah cells with a rating of much higher than 1C so even at peak the load doesnt reach 1C of the battery. 100a max? Is that a rule of thumb? It’s definitely not in any standard. Maybe it was a battery manufacturer stating that’s their battery could only handle 100a. If your system is designed appropriately, as this one is, the you should be able to manage a higher currents. I agree that a higher battery voltage would overall keep the current lower but in this instance a consideration to overall design and installation was taken. All of our installations take into consideration the battery as the starting point. Peak discharge of the battery is the first and most important consideration. Cheers.
@@outechoffgrid fair comment mate and as I stated previously your installations appear gold standard so great work, you would be amongst the small 5% of solar installers that do van builds correctly......the first time. And you are 100% correct as the 100A max drain is a rule of thumb and not a standard.
How do you find customers having to pay twice for a job?
Nobody loves paying twice. But usually once we have finished the difference in the result makes them happy.
A 12volt battery setup with a 3000-watt inverter (potentially 250amp draw??????)
What happened to the rule of not drawing more than 100amps from a lithium battery (taking into account battery C ratings)
You stated that it was a 200AH battery but the important criteria is the voltage, if it was a 24-volt battery then the setup would be closer to well installed (125amp max draw)
A good visual installation is great and shows signs of good workmanship, but a technically correct installation is also critical.
PS - I don't mean to be harsh as your installation workmanship is gold and says a lot about your pride of workmanship, but I have seen way too many installations that do not take into account the potential damage done to expensive batteries by the initial setup....keeping in mind that if you provide the capacity then customers will use it regardless of what you may have advised them to do.
PPS - also a sparkie with 40+ years in the trade.
Hi and thanks for the comment.
This battery is 620ah battery with a 300a constant discharge BMS (not 200ah as you mentioned). The battery construction is paralleled 314ah cells with a rating of much higher than 1C so even at peak the load doesnt reach 1C of the battery.
100a max? Is that a rule of thumb? It’s definitely not in any standard. Maybe it was a battery manufacturer stating that’s their battery could only handle 100a. If your system is designed appropriately, as this one is, the you should be able to manage a higher currents.
I agree that a higher battery voltage would overall keep the current lower but in this instance a consideration to overall design and installation was taken. All of our installations take into consideration the battery as the starting point. Peak discharge of the battery is the first and most important consideration.
Cheers.
@@outechoffgrid fair comment mate and as I stated previously your installations appear gold standard so great work, you would be amongst the small 5% of solar installers that do van builds correctly......the first time.
And you are 100% correct as the 100A max drain is a rule of thumb and not a standard.