Global manufacturer of lithium iron batteries for homes and business w/NABCEP training and live technical support. 10 year warranty. Located in Southampton, PA.

Joined October 2020
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Learn a little more about our eFlex battery docs.google.com/document/d/e…?
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Are you a Fortress Battery installer? Join our Discord group for chat-based technical support. Communicate between the office and the field as teams with real time support. #NABCEP #LiP04
Installers and Distributors in our Dealer network can now use our free battery sizing tool to determine how much solar capacity is sold back to the grid, based on 12 month consumption data. #NABCEP
There are a lack of off-grid sizing tools on the market. Developing an off-grid sizing model can built off a PVWatts spreadsheet, providing valuable structure for net-metering, zero outflow, and variable rates, simultaneously increasing energy reliability beyond these structures.
Are you a Fortress Power installer? Our offgrid / solar outflow batter sizing tool is now in our dealer resources page. fortresspower.com/installer-…
New Favorite Battery Combiner?
It's cold outside. If you are using battery temp sensors on your lithium batteries (and you shouldn't), you might be prematurely ending your bulk charge - especially on Outback inverters #NABCEP #energytwitter
The semi-conductor shortage is rippling across the manufacturing sector #SiliconAge @croselund msn.com/en-us/money/news/for…

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Outback Radian Fortress eFlex 5.4s Wall Mount ❤️❤️❤️ #NABCEP #solar #storage
Winter is the season of deeply discharged batteries. Every solar contractor installing home lithium batteries should purchase a ~54.6V 4A battery charger alligator clip connectors. These can be found on amazon (separately) for under $100 total. #NABCEP #EnergyTwitter
Looking for a quality battery inverter that will pair with only 1 eFlex? Meet the Victron Quatro 3000 victronenergy.com/upload/doc…

FortressPowerTechSupport retweeted
What a year 2020 has been. What are your prepping goals for 2021?
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FortressPowerTechSupport retweeted
Stuck out here in paradise.
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Monday after Christmas, start your engines

ALT Batman And Robin To The Inbox GIF

Installers using the Solark 12kW outdoor unit should use the canbus/battery port for closed loop communication rather than the modbus/RS485 port. This is a recent hardware change on SolArk. Update to the integration manual will come shortly. #NABCEP #fortresspower
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Need some good Christmas reading? Our white paper on eFlex project planning can save you time and money in the field! fortresspower.com/resources/

Recent update: eFlex Design Considerations Guide added to Dealer Resources #NABCEP
Every snowflake is unique, but the eFlex 5.4 kwh is really something truly special.
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