Of interest to @guystewart probably;
In the MPPT RS quiz (2.1 - MPPT RS - Basic Training) , question #3
Active cooling allows what operating temperature range for the MPPT RS
The spec sheet doesn’t list any of those, but the does say;
Operating temperature range : -40 to +60 °C (fan assisted cooling)
So either the spec has been adjusted down from 65 to 60, or the quiz has a typo?
Thanks,
Operating temp reduced by 5 degrees since originally published I think.
Fixed now.
Cool.
For this one;
https://www.victronenergy.com/upload/documents/Datasheet-BMS-overview-EN.pdf says this;
Feature highlights common to all models:
• Specifically designed for use with our Lithium Smart Battery 12,8 V & 25,6 V range.
• Communicates directly with the lithium battery via the battery’s M8 circular connector cables.
• Protects the lithium battery cells from overvoltage, undervoltage or a too low or high temperature by turning off loads or
charge sources via its “load disconnect” and “charge disconnect“ terminals.
• The maximum number of batteries that can be connected to the BMS is 20
The documentation says 20 as far as i can tell, but “Any Number” is not correct, apparently its 5.
Then i found this;
November 28th, 2022
2022-11-28
The maximum limits as until now documented in datasheet and manual have been, on purpose, conservative. After having more experience, and more time spent on testing in R&D, we are confident to be able to increase the maximum system sizes.
The rule was max. 5 batteries, or max. 5 battery strings, in parallel.
Per now the new rule is a maximum of 20 batteries in total. Ie. no more limit on how many parallel batteries/battery-strings that results in.
Documentation is being updated.
This one might be an anachronism - plenty of batteries are warranted for 10,000+ cycles to 80 or even 90% DOD now.
Shouldn’t this say “What is the maximum nominal battery bank voltage” … max battery bank voltage will be closer to 58v
Thanks for the swag!
Welcome, it’s a bit of a weird grab bag, but that’s how victron does it
