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How long did your EcoTech Battery Backups last? (1 Viewer)

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Another thing to keep in mind for using a LiFePO4 to make your own battery backup for the ecotech stuff is that someone posted the battery and it is listed as 18AH. On 100AH battle born battery would get more than 5x the run time as an echotech battery even if you assume you can use 100% of that 18AH. That battery is $900 and you would have to add adapters and a charger so about $1k. Bulk reef supply has the Ecotech battery at $173 and you would have to get 6, maybe more, to match the run time which brings you to $1k.

Basically, they come to about the same price. One is purpose built and looks ok, the other would be hobbled together and may be a challenge to make look good. One solution you have multiple that would have to fail, but they don't seem to last all that long from what I have seen. The other you would have only one that would have to fail, but it should last you a long time.

Relion does have smaller batteries, so you could go the LiFePO4 route with multiple smaller batteries for more redundancy or lower cost. I had emailed them when I was thinking about doing this and they said that the LiFePO4 chemistry does not degrade when held at 100% charge. I would still like to see some evidence of this personally.
I'm gonna reach out to a solar off-grid guru and tell him what I plan to do with my aquarium and see what he thinks will last the longest and what voltage I need and how many batteries I need.

Lithium Iron Phosphate is the way to go IMO. I'm gonna hook mine up where it will automatically come on when the power shuts off. I may not even have to fire up my generator for 3-4 days.
 
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This is the charger I use on my current AGM.

DIGITAL 400​

SKU: Digital 400

12V PERFORMANCE CHARGER AND BATTERY MAINTAINER​

Looking for a car, marine, motorcycle, or other AGM battery charger? The OPTIMA Chargers Digital 400 12V Performance Maintainer and Battery Charger automatically maximizes battery life and performance with a built-in battery health mode. It also offers a hybrid LED battery-charging gauge with LCD screen and a quick-set battery type selection for easy operation. And because it recovers discharged batteries that others cannot, this is the maintainer that is a must-have in your garage.
Key Benefits:
  • Maximize battery life and performance with OPTIMA batteries’ built-in battery health mode
  • Hybrid LED battery-charging gauge with LCD display
  • Hook it and tilt it with the dual-purpose stand design or hang it with included wall organizer bracket
  • 4 amp max

Battery Charger.png
 
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