Simi 60
Guru
- Joined
- Jul 1, 2016
- Messages
- 5,482
- Location
- Australia
- Vessel Make
- Milkraft 60 converted timber prawn trawler
Our 840ah @ 24v lifepo4 battery bank has been up and running for several weeks now providing 240v power to run anything and everything we have including welders.
To say I am impressed is an understatement.
Some claim Lifepo4 is expensive but here are our examples
840ah @ 24v of usable power from AGM would require 3360ah @ 12v
That would be 16 X 220ah 12v batts at 65kg each = 1040kg of batts
And, half decent AGM batteries here in Oz would be around $9600 AUD ($6750 USD) + freight on a tonne
Decent batteries like full river would be closer to $17000 AUD ($11960 USD) + freight on a tonne.
In comparison,
Matched and batched EVE 280ah 3.5v cells X 24 (8 makes a 24v @ 280ah batt)
A 200amp JBD BMS and a 200 amp MRBF for each
Makes for a single, totally independent battery and, the boat will run on one - for the first few days we did just that as proof of concept
Each 24v block weighs in at around 47kg including compression frame, busbars, BMS etc
Total weight of 840ah battery bank less than 150kg vs 1040 kg for AGM.
Cost for all this?
$3650 USD and that included delivery to the door.
TLDR:
840ah usable Lifepo4 (some assembly required) 150kg weight $3650 delivered to door
840ah usable AGM (some assembly required) 1040kg weight $17,000 PLUS delivery
To say I am impressed is an understatement.
Some claim Lifepo4 is expensive but here are our examples
840ah @ 24v of usable power from AGM would require 3360ah @ 12v
That would be 16 X 220ah 12v batts at 65kg each = 1040kg of batts
And, half decent AGM batteries here in Oz would be around $9600 AUD ($6750 USD) + freight on a tonne
Decent batteries like full river would be closer to $17000 AUD ($11960 USD) + freight on a tonne.
In comparison,
Matched and batched EVE 280ah 3.5v cells X 24 (8 makes a 24v @ 280ah batt)
A 200amp JBD BMS and a 200 amp MRBF for each
Makes for a single, totally independent battery and, the boat will run on one - for the first few days we did just that as proof of concept
Each 24v block weighs in at around 47kg including compression frame, busbars, BMS etc
Total weight of 840ah battery bank less than 150kg vs 1040 kg for AGM.
Cost for all this?
$3650 USD and that included delivery to the door.
TLDR:
840ah usable Lifepo4 (some assembly required) 150kg weight $3650 delivered to door
840ah usable AGM (some assembly required) 1040kg weight $17,000 PLUS delivery
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