Search found 8625 matches

by 999zip999
Jun 15 2019 7:55pm
Forum: Battery Technology
Topic: Small powerwall build
Replies: 14
Views: 220

Re: Small powerwall build

OSN has a post spot welder machine but theheat to spot weld a post after cell is made is questuionable. It would have to be done before in production
by 999zip999
Jun 15 2019 5:12pm
Forum: Battery Technology
Topic: Small powerwall build
Replies: 14
Views: 220

Re: Small powerwall build

Wow that is some bms.
by 999zip999
Jun 15 2019 3:47pm
Forum: Battery Technology
Topic: Small powerwall build
Replies: 14
Views: 220

Re: Small powerwall build

Yes I have had a garage fire . The fire department first truck couldn't get the pump to work and 20 minutes later the second truck oh they did ask me where the closet fire hydrant was . Then before they left one fireman looked at my 100 ft of garden hose and said we could have just used it { as the ...
by 999zip999
Jun 14 2019 8:08pm
Forum: Battery Technology
Topic: Can I just Upgrade the Hub Motor?
Replies: 12
Views: 684

Re: Can I just Upgrade the Hub Motor?

What ? Duck and cover..
Just buy a rear 48v kit 159.00 usd free shipping and a 600.09 battery. Good to Go.
by 999zip999
Jun 14 2019 2:12pm
Forum: Battery Technology
Topic: AliExpress battery pack unboxing
Replies: 126
Views: 5248

Re: AliExpress battery pack unboxing

How much voltage sag do you get on that big battery pack in how many amps is your controller set at
by 999zip999
Jun 12 2019 7:44pm
Forum: Battery Technology
Topic: Which cell for long lasting battery
Replies: 32
Views: 710

Re: Which cell for long lasting battery

170 cycles over how many years ?
by 999zip999
Jun 12 2019 11:05am
Forum: Battery Technology
Topic: Charging Problems
Replies: 10
Views: 301

Re: Charging Problems

When charging you want get your batteries hot.
by 999zip999
Jun 11 2019 9:35pm
Forum: E-Bike General Discussion
Topic: MAC 10T @ 36V vs 12T @ 48V??
Replies: 27
Views: 1960

Re: MAC 10T @ 36V vs 12T @ 48V??

Make sure you have a temp sensor in the motor and a C.A. v3 to monitor. Less likely to melt. Plus talk to paul or Mac for special turn motor.
by 999zip999
Jun 11 2019 9:04pm
Forum: E-Bike Technical
Topic: Motor jerks when throttling
Replies: 6
Views: 214

Re: Motor jerks when throttling

It may be a bms sense wire come loose.? If 48v 13s the charge voltage should be 54.6v or very close. See if it takes a full charge.
by 999zip999
Jun 11 2019 8:50pm
Forum: Battery Technology
Topic: Power tool batteries. Better setup?
Replies: 6
Views: 174

Re: Power tool batteries. Better setup?

Yes how new are the two ego to each other ? Need to charge to same voltage. Or iif one charger is of higher voltage charhe each one on its own charget to put the lower charge battery on rated charger. Or if just one ego make sure of same voltage before connecting. If you charge one and set aside the...
by 999zip999
Jun 11 2019 5:55pm
Forum: Battery Technology
Topic: Power tool batteries. Better setup?
Replies: 6
Views: 174

Re: Power tool batteries. Better setup?

Use the 10ah ego battery less connections less change of mistake.
by 999zip999
Jun 11 2019 5:49pm
Forum: Battery Technology
Topic: Lifepo4 charging - 2 x 12S2P
Replies: 6
Views: 175

Re: Lifepo4 charging - 2 x 12S2P

There are a lot of 36v lifepo4 .Yes make sure it is for your chemistry. Make sure of the voltage of each pack before combining. Maybe a meter on each charger.
by 999zip999
Jun 10 2019 7:33pm
Forum: Items for Sale - Used
Topic: SOLD
Replies: 1
Views: 130

Re: 6fet sensored lyen controller

Where you located I would take a crack at it I have a 9 fat with a blown 5 volt rail maybe two can make one. Wait but would be a 7.5 fat controller oh it's okay I'll still try to mate them. One must go so the other can survive..
by 999zip999
Jun 10 2019 11:51am
Forum: Battery Technology
Topic: AliExpress battery pack unboxing
Replies: 126
Views: 5248

Re: AliExpress battery pack unboxing

Give it some time and cycles before you try to find LVC.
by 999zip999
Jun 10 2019 10:40am
Forum: Battery Technology
Topic: 10s3p 30Q Pack Cell or BMS gone bad?
Replies: 11
Views: 222

Re: 10s3p 30Q Pack Cell or BMS gone bad?

Good job ! Just monitor. The lower you discharge the more likely to go on balance. I've only had a BMS balance Channel get stuck open and drain and drain. But it was with a singalab bms with led for each channel. Or else I would have never known.
by 999zip999
Jun 10 2019 6:36am
Forum: Battery Technology
Topic: Problems with new battery - help or info apreciated
Replies: 8
Views: 202

Re: Problems with new battery - help or info apreciated

Always first contact the vendor for advise . Waiting reply from China or email is more frustrating then a phone call.
by 999zip999
Jun 09 2019 5:48pm
Forum: Battery Technology
Topic: How remove one parralel row from battery?
Replies: 12
Views: 170

Re: How remove one parralel row from battery?

What motor and controller are you running and at what amps ? I cleaned up my two earlier post at a couple misspelling
by 999zip999
Jun 09 2019 3:54pm
Forum: Battery Technology
Topic: How remove one parralel row from battery?
Replies: 12
Views: 170

Re: How remove one parralel row from battery?

I would put a popsicle stick between the can and the nickel before I try to cut it. At the positive end and if you cut through the tab and touch the can fireworks.
by 999zip999
Jun 09 2019 3:52pm
Forum: Battery Technology
Topic: How remove one parralel row from battery?
Replies: 12
Views: 170

Re: How remove one parralel row from battery?

Depending on the packs design. You would need just discharge the pack to near zero. Or 2.8volt per cell. Get the demel out and probably cut the nickel strip like 15 times without cutting the cans. Small 3p packs are very hard on the cells. Less power sharing. We would need pics or link to your batte...
by 999zip999
Jun 09 2019 3:16pm
Forum: Battery Technology
Topic: How remove one parralel row from battery?
Replies: 12
Views: 170

Re: How remove one parralel row from battery?

More work than it's worth. Why ?
by 999zip999
Jun 09 2019 3:14pm
Forum: Battery Technology
Topic: Problems with new battery - help or info apreciated
Replies: 8
Views: 202

Re: Problems with new battery - help or info apreciated

Where did the battery come from do you have a link
by 999zip999
Jun 09 2019 2:49pm
Forum: Battery Technology
Topic: 10s3p 30Q Pack Cell or BMS gone bad?
Replies: 11
Views: 222

Re: 10s3p 30Q Pack Cell or BMS gone bad?

Just replace the three bad cells.
by 999zip999
Jun 08 2019 6:31pm
Forum: Battery Technology
Topic: Pure Nickel Sparking When Cut With Disc?
Replies: 8
Views: 208

Re: Pure Nickel Sparking When Cut With Disc?

How to test for nickel? Hold the piece of iron or nickel test paper (point facing out) in the stainless steel tweezers. Wet the test paper with a few drops of saturated sodium chloride using a pipette or eyedropper. Touch the wet test paper to the metal surface. Hold for 5 seconds to allow electroly...
by 999zip999
Jun 08 2019 1:40pm
Forum: Battery Technology
Topic: 10s3p 30Q Pack Cell or BMS gone bad?
Replies: 11
Views: 222

Re: 10s3p 30Q Pack Cell or BMS gone bad?

Yes it matters how you discharge and charge the battery and at what levels.
by 999zip999
Jun 08 2019 1:02pm
Forum: Battery Technology
Topic: Lifepo4 charging - 2 x 12S2P
Replies: 6
Views: 175

Re: Lifepo4 charging - 2 x 12S2P

I charge to 3.5v or in reality 3.48v - 3.52v. Not much available power over that. I fully charge after use as I will use the next day. Not as much ill effects as18650 cells do if keeped at top charge. Lifepo4 big heavy and long lasting and safer. Most bms's are limted to 5-6amps of charging.