Idiot's guide to a self build battery

[AGT]

Afraid that’s the start, rubber matting and 2x18mm sheet ply on floor
Waiting on deliveries and SP G99 approval

[Stinsy]

A nice start to the day, battery stack had went from 17% soc to 99% soc within the charging window. I'll leave it on its daily schedule, looks like a nice simple way to get that extra bit into the tank. The stack hit 80% soc at 02.20hrs. It will be great in Winter for running the ashp.

If I chose to I could also use the EV battery to run the add on charger, to charge the stack, to export to grid (or top up for a Winter hungry ashp). Can't see that becoming a thing but it's one more interconnect in place within the home. I will try it least once.

If anyone is interested for their own system? It is a chunky unit with a good cooling fan and excellent fins. Good quality flexible cables too along with an Anderson connector. All in all, a great, well built bit of kit. It should pay itself off incl postage in a little under 1.6MWh. About 6 months time.

https://a.aliexpress.com/_EvQESLO

Nowty, thank you very much for the logic switch offer but it looks like we're good.



Edit-
By completing the loop between EV and house stack which is V2H-G we raise the non intervention stack charging rate to 5.4kW (3.9+1.5) and the potential storage to 115kWh of battery. The potential export on that is in theory 70kWh in the 18hr window without solar if i get up at 05.30 and connect the EV (unlikely). The true charge rate of that 115kWh combined battery stack is 3.9+1.5+7.2 = 12.6kW. All for a £90 charger.

I am unlikely to go chasing this for export money but can see the scenario being used when the ashp is chewing through the stack in Winter. I'll be glad of it then.

I know a few people who get free EV charging at work. It’d be compelling to have a V2L EV and forklift charger arrangement if that were the case…

[Joeboy]

A nice start to the day, battery stack had went from 17% soc to 99% soc within the charging window. I'll leave it on its daily schedule, looks like a nice simple way to get that extra bit into the tank. The stack hit 80% soc at 02.20hrs. It will be great in Winter for running the ashp.

If I chose to I could also use the EV battery to run the add on charger, to charge the stack, to export to grid (or top up for a Winter hungry ashp). Can't see that becoming a thing but it's one more interconnect in place within the home. I will try it least once.

If anyone is interested for their own system? It is a chunky unit with a good cooling fan and excellent fins. Good quality flexible cables too along with an Anderson connector. All in all, a great, well built bit of kit. It should pay itself off incl postage in a little under 1.6MWh. About 6 months time.

https://a.aliexpress.com/_EvQESLO

Nowty, thank you very much for the logic switch offer but it looks like we're good.



Edit-
By completing the loop between EV and house stack which is V2H-G we raise the non intervention stack charging rate to 5.4kW (3.9+1.5) and the potential storage to 115kWh of battery. The potential export on that is in theory 70kWh in the 18hr window without solar if i get up at 05.30 and connect the EV (unlikely). The true charge rate of that 115kWh combined battery stack is 3.9+1.5+7.2 = 12.6kW. All for a £90 charger.

I am unlikely to go chasing this for export money but can see the scenario being used when the ashp is chewing through the stack in Winter. I'll be glad of it then.

I know a few people who get free EV charging at work. It’d be compelling to have a V2L EV and forklift charger arrangement if that were the case…

I've always thought that V2HWG in any form is the way to go.

We are charging the EV tonight for the 1st time in 3 days. In the interim we have been supplying our cul de sacs small daytime req's hopefully from our car. Or at least a facsimile of that .

We exported 67.6kWh yesterday which is without having to check a new PB.

This will be an interesting year as it's our first full year with everything moved into position and up toward the system max. That's already a tenner in a day barrier breached, SO early in this year of new things.

We could in theory with a tailwind and good fortune crack 100kWh exported in a single day. I'l be keeping an eye out for that. Won't be a consistent thing but would like the 1 day badge.

What size of forklift battery, what size of forklift fleet?