To A or B?

[scubaFan]

Question, are B cells good enough for non daily use? They seem cheaper per Ah?

Plan. RV setup. Have 2x6V GCs today. Inverter and no solar. Generators for recharge when boondocking.

I will camp about 4 to 6 times a year ( 30 days) and extend into the week to avoid traffic, and enjoy camping. Inverter and starlink makes work possible.

I am thinking of 12v 280 to 304 Lifepo4 prismatic cells, as a diy build ( because I can and will be fun). (RV 12v, inverter 12v...no value in going bigger)

With the limited annual use, is there a reason going for B class cells would be wrong? Thinking the 18650 store grade b ( I know sold out, but this is more of a concept thank this one sale). Since they are quite a bit cheaper.

Thoughts?

Ok other thought. Should I continue to keep these on charge all winter long or just charge them up and let them sit in RV( yes well below 32) thanks in advance?

 

[sunshine_eggo]

The less frequently you use LFP, the more problematic they become.

Lower grade cells make the above worse.

IMHO, sounds like you should stick with the 6V GCs.

 

[Alkaline]

All depends on price, earlier this year grade B prices were 90% 0f grade A which were complete rip-offs. Now they have come down. I generally would never pay more than 60% of a grade A cell when buying B.

E.G. if grade A sells for $100, then grade should be $50-60 max.

So it all comes down to price.