li fe po4 battery upgrade?

GOOGLE

SCORPIONS UV LIGHT.

Power supply 32 vdc flood-lit almost acre. The buggers glow like green Christmas tree bulbs. Easy to decontaminate house and patio. With pincers put them in a jar. At dawn enter the henhouse pen and extract them one-at-a-time. The hens and roosters fight over them. Avian caviar? Scorpions are stupid. They try crawling on ceilings and fall onto beds, keyboards, the head. But they hide during the day. The 50 watt chip picks them up 100' distance. Against the girls armed with foot long tongs and a reward they don't stand a chance.

Ordered 4 Battle Born today. Can't beat dealing with those folks !

MEXICOWANDERER wrote:
But using the pack in conjunction with a 347 nm UV 800 ma LED chip for portable night-time scorpion hunting has me intrigued.

Huuuuuhhh?? LED's for scorpion hunting??

This is what worked best for night-time worm gathering and night-time spear fishing when I was a kid ... should still work best for scorpions :B :
http://www.coleman.com/1-mantle-kerosene-lantern-rounded-globe/3000001138.html

Hence in my original post my protocol for an exaggerated drawn-out recharging event. You can bet I was thermal scanning all six accumulators during the process. The 11.2 volt pack was perfect for checking 800ma LED chips prior to assembly. Now I have (another) lab power supply so I do not need the pack as much. But using the pack in conjunction with a 347 nm UV 800 ma LED chip for portable night-time scorpion hunting has me intrigued. The price of the chip howver is daunting. 9.5 watt 347 nm chips are pricey.

MEXICOWANDERER wrote:
This is a batteries working perfect, blue screen of death laptop series LiPo bundle rescue and I am getting up to .22 volts differential between cells at a 2.2 ampere recharge rate. The stupid bundle has superb capacity characteristics and extraordinarily minuscule self-discharge values. Are LiPo's THAT sensitive?

The taps are chopped wires. Could they have connected to a management system?

- Yes

Have you "Balanced" the pack - I have a few LiPo packs sized 6 to 12amp/hr ratings all have less than 10mV difference between highest and lowest cells

Comparing apples and oranges here

LiPo cells - 3.7V / cell, can go boom if not taken care of - suggest you bottom and or top balance the cells with something similar to this nice little device

https://smile.amazon.com/gp/product/B00ND7J38C/ref=oh_aui_detailpage_o07_s00?ie=UTF8&psc=1

That link is for a iMAX B6 charger - I have one and really like what it does for my many small LiPo packs and individual cells

Life - aka LiFePO4 - Cells are 3.2Vdc and - FAR less prone to going boom when treated improperly

LiFeMnPO4 - cells are 3.2Vdc and are very similar in characteristics to the Life cells - with only a slight variance in charging specifics

NinerBikes wrote:

MrWizard wrote:
Everything from them needs to be taken with copious amounts of salt
They went from the bus to a new RV, to now in a Sail boat
Iirc
Sponsors paid for everything
RV, batteries, solar,etc..

Any links on their new motor home, and then their boat?

I don't see anything on their feed about a new motor home. They state that they're keeping the bus.

As I said, Gone With The Wynns went from a new motor home that I think they were "testing" to a new sail boat. I don't know the whole story. As Mr Wizard did with Technomadia, I did with the Wynns.

MrWizard wrote:
Everything from them needs to be taken with copious amounts of salt
They went from the bus to a new RV, to now in a Sail boat
Iirc
Sponsors paid for everything
RV, batteries, solar,etc..

Any links on their new motor home, and then their boat?

Many of us share our results and try to help others for free. Technomedia, not so much.

MrWizard, they do say their LI bank has suffered from heat and has lost iirc about 20 percent of the original capacity.

Not hate
But everything from them was 'Rose' colored
I don't remember any "this didn't work"
"This is not holding up", "don't get this"

Everything was tested under optimal conditions, the caveats seemed not to get mentioned

After a couple reads and a couple of videos, I decided I had better things to entertaine me

MrWizard wrote:
Everything from them needs to be taken with copious amounts of salt
They went from the bus to a new RV, to now in a Sail boat
Iirc
Sponsors paid for everything
RV, batteries, solar,etc..

They put a 500 Ah lifepo4 bank in their bus. Is it any less a valid solution if someone paid for it? The whole bank was the weight of one of my GC2s. Is that because it was free? Lotta hate out there for these people.

They went from a bus conversion to a power boat. You're thinking of the Wynns.