Playing with Toys

"Rusty Vandura - www.tinyurl.com/keepoppo" (rustyvandura)
07/06/2019 at 16:18 • Filed to: None

I learnt that there are two types of inverters: modi fied sine wave and deep fried sine wave. (Well, the first one is a thing, but I can’t remember what you call the second kind.) Dumb things like transformers don’t care about that difference, but smart things, like medical devices, do care. So I’m running a length of 6 ga. primary wire to power the new inverter, which claims to carry 1100 watts, which would be on the order of 100 amps at car power levels, but I’ll never be using that much electrons at once. But it’s fun playing with this stuff.

DISCUSSION (5)

farscythe - makin da cawfee! > Rusty Vandura - www.tinyurl.com/keepoppo
07/06/2019 at 16:27

ooooo portable torture kit

hey wait... wheres the nipple clamps?

VincentMalamute-Kim > Rusty Vandura - www.tinyurl.com/keepoppo
07/06/2019 at 16:27

Modified sine = basically square wave. The expensive inverter is pure sine. Although deep fried sine sounds tastier!

Nice battery box. What are you making?

100amps at 12V. You can do welding!

Rusty Vandura - www.tinyurl.com/keepoppo > VincentMalamute-Kim
07/06/2019 at 16:33

Thanks for the compliment on the box. I made it myself:

https://oppositelock.kinja.com/doing-nice-work-is-a-lot-of-work-1827669523

I’m just getting ready for a trip, and making the new inverter usable.

Do you think 35 amps is to fast a rate to charge a deep cycle battery? 20 amps better?

VincentMalamute-Kim > Rusty Vandura - www.tinyurl.com/keepoppo
07/06/2019 at 17:29

Your battery looks like a flooded lead acid deep cycle. Buy a quality battery charger. The charger will take care of the charging amps and with a 3-stage charge profile, it will maintain it in the third stage float mode.

You would only worry about 35 vs 20 amps if you were manually setting charge voltage and current. I thought I read somewhere your battery was 85 A H? Even if it was 100 AH, your 35 amp charger isn’t going to push 35 amps into the battery (assuming decent smart charger ).

batteryuniversity.com is a good resource. It does say 50% discharge is a reasonable compromise between usage and life. If you’re able to keep it to above 70% depth of discharge (30% discharged ) , you get double the battery life.

Rusty Vandura - www.tinyurl.com/keepoppo > VincentMalamute-Kim
07/07/2019 at 00:10

Thanks for the tip. I'll check that site out