2 200 amp vs 4 100 amp

[SV Confianza]

Originally Posted by wholybee

I don't see anything on the redodo site that lists the size of the BMS. There is no reason to believe that the 200Ah battery has a 200A BMS. It very well might be the exact same BMS as the 100Ah battery. It might even be the same BMS as the 50Ah battery.

Personally, I would not even give the slightest bit of consideration to a battery that didn't list current handling capacity up front.

They do list it on the description. The 200ah has a 100a bms. But you're right to point that out, since the 2x 200ah bats will have 200a max output while the 4 will have 400a max.

[sleepy]

its shows two batteries the standard with a 100 bms and the plus with a 200 bms

[SV Confianza]

Originally Posted by thinwater

It's Ah guys. The A is capitalized because amps are named for Andre Ampere.


This is distinct from CCA, which is not what you are discussing, I think.

If you want to be pedantic about it, the A is not capitalized because of the proper name in the unit. In fact, units of measure, when spelled out, even if they have a name in them, are all lower case (for the most part).

However, when you abbreviate a unit of measure, you have to use the proper capitalization standard. Wouldn't want to mix up your Mgs with your mgs or your Kgs with your kgs!

[sleepy]

its shows two batteries the standard with a 100 bms and the plus with a 200 bms

[SV Confianza]

Originally Posted by sleepy

its shows two batteries the standard with a 100 bms and the plus with a 200 bms

I would go with the two, 200Ah, 200A BMs batteries. Easy to connect both to a bus bar with equal length cables and keep them balanced. Lot less wiring.

[01kiwijohn]

Originally Posted by sleepy

i am installing either 2 200 amp redodo or 4 100 amp redodo batteries, is having 2 batteries enough redundancy or am i better off with 4, was thinking the less connections the better??

Apart from the actual electrical considerations; remember, at some point you'll have to manhandle those batteries in and out of the boat, up and down the dock and, maybe into and out of the dinghy.

[wholybee]

Originally Posted by 01kiwijohn

Apart from the actual electrical considerations; remember, at some point you'll have to manhandle those batteries in and out of the boat, up and down the dock and, maybe into and out of the dinghy.

A 200Ah LFP is considerably lighter than a 100Ah lead. So while this might be an issue with a 400Ah LFP, at the sizes considered probably isn't an issue.

[sleepy]

can i use a the new 50 amp dc to dc buck from victron with my stock alternator on my beta 35 i think it is a 70 amp to charge my lith and keep the alt to charge agm starter battery ?

[Stu Jackson]

Originally Posted by mvweebles

Whew.....glad you cleared that up. I'm sure the entire CF universe was scratching their head trying to figure out what the heck "100ah" means.

I agree with thinwater. The OP was wrong and you making fun of a correct, uhm, correction is nonsense.


Also an odd subforum to put this question in. Fire away!



I thought this about people who refuse to learn proper terminology and/or read books!

Hi, I just got interested in cooking and found this great forum. I've bought all the pots and pans and tupperware and utensils and can't wait to get started. My first meal, for my girlfriend who is coming over in about an hour, is spaghetti and meat loaf. What kind of steak do I buy? Help!

[motion30]

Originally Posted by wholybee

I always try to capitalize my units correctly. In some cases it actually makes a difference, though here it is simply proper because it refers to a person. I would be more concerned about the usage of "Amp" instead of "Ah" (or "ah") because that actually does create confusion in meaning at times. It also shows that the writer might not understand the electrical theory and the response should be treated as such...

You are correct but the interesting part is it seems like everybody on the site knew just what he was talking about