Date: 30/08/2017 17:06:37
From: Tau.Neutrino
ID: 1111402
Subject: People Are Using Old Laptop Batteries to Build Their Own Powerwall

People Are Using Old Laptop Batteries to Build Their Own Versions of Tesla’s Powerwall

Tesla’s Powerwall was intended to provide a convenient way for homeowners to store electricity for future use, such as when the power goes out. But with a US$5,500 price tag, they haven’t been affordable for many consumers.

more…

Reply Quote
Date: 30/08/2017 21:22:31
From: mollwollfumble
ID: 1111565
Subject: re: People Are Using Old Laptop Batteries to Build Their Own Powerwall

In that case, given that all my laptop batteries go dead extremely fast, I should be reversing the procedure.

Reply Quote
Date: 30/08/2017 21:31:04
From: Tau.Neutrino
ID: 1111567
Subject: re: People Are Using Old Laptop Batteries to Build Their Own Powerwall

mollwollfumble said:


In that case, given that all my laptop batteries go dead extremely fast, I should be reversing the procedure.

Are they rejuvenating the old batteries somehow?

Reply Quote
Date: 31/08/2017 20:52:15
From: wookiemeister
ID: 1111973
Subject: re: People Are Using Old Laptop Batteries to Build Their Own Powerwall

Old news

You need someone willing to give you the laptop cells

By my thinking you should really have diodes on each cell to make sure that current can’t circulate through a dud cell

One way is to charge each paralleled cell pack to control charging

For an 18650 cell , charging after the cell is already at 4.2 is problematic

Reply Quote