AC DC Adaptor fail

[bernardgreen]

Age also causes IR. I remain convinced aging is reversible with high voltage. This belief can be tested on the remaining sealed batteries.

I therefore remain convinced that you need to invest in acid proof personal protection.

 

[DiyNutJob]

I therefore remain convinced that you need to invest in acid proof personal protection.

Got one going now 32.4v @ 35mA.

 

[DiyNutJob]

Mission accomplished. Restored the 027 battery to max CCA. I varied the amperage from 35mA to 45mA, with voltage constant at 32.44v. 45mA produced enough bubbles for me to not like. But the slightly over-powered charging could be a necessary evil.

Battery state after resting for 2 days:
12.86V stand alone
3.99 m-Ohm internal resistance
100% wear life
650 CCA, Spec: 600 CCA, type 027

What remains unaccomplished is to charge the battery to 16v. It's a mystery how the 23v max, 6w max china solar panel did it. I believe 16v is beneficial even though I can restore batteries without getting to that voltage level.

 

[DiyNutJob]

Time for another battery revival. Reduced sunlight meant that a 4.5w up to 23v non-optimally placed solar panel was not able to sustain the battery at this time of the year. The car sat undriven for 3-6 months.

Battery state
10.17v stand alone
72.84 m-Ohm internal resistance
1% wear life
35 CCA - runs a micra alarm system and locks, but unable to start engine
Spec: Lion 063 40Ah EN 340CCA, very old

Charger configuration
26mA effective charge current
1.5w mains draw
32.5v open circuit
36mA open circuit

 

[DiyNutJob]

Battery state
12.3v stand alone
12.46v connected to charger
36.49 m-Ohm internal resistance
3% wear life (assuming 380cca max capacity)
71 CCA
Spec: Lion 063 40Ah EN 340CCA, very old

Charger state (no adjustment made from previous)
22.?mA effective charge current
1.5w mains draw
31.5v open circuit

 

[DiyNutJob]

Battery state
12.37v stand alone
12.47v connected to charger
15.32 m-Ohm internal resistance
20% wear life (assuming 375cca max capacity)
168 CCA
Spec: Lion 063 40Ah EN 340CCA, very old

Charger state (no adjustment made from previous)
20mA effective charge current
1.5w mains draw
29mA open circuit

 

[DiyNutJob]

Battery state
12.37v stand alone
12.48v connected to charger
14.05 m-Ohm internal resistance
24% wear life (based on 340EN 374CCA, conversion table: https://attachments.priuschat.com/attachment-files/2015/09/94760_EN_CCA.pdf)
184 CCA
Spec: Lion 063 40Ah EN 340CCA, very old

Charger state (no adjustment made from previous)
20mA effective charge current
1.5w mains draw
31v open circuit
31mA open circuit

 

[bernardgreen]

It looks like DNJ has discovered ( or maybe even invented ) wireless electricity ( electrickery )

31v open circuit
31mA open circuit

 

[RandomGrinch]

It looks like DNJ has discovered ( or maybe even invented ) wireless electricity ( electrickery )

Tesla reincarnate?

 

[Harry Bloomfield]

It looks like DNJ has discovered ( or maybe even invented ) wireless electricity ( electrickery )

I thought that it was Tesla who claimed to have invented that?

 

[DiyNutJob]

It looks like DNJ has discovered ( or maybe even invented ) wireless electricity ( electrickery )

Things have changed since you were a school boy. Nowadays, people can do almost magical stuff with china gear. Here's a slightly similar unit to the charger I am using. Mine is shown in the earlier part of the thread.

 

[opps]

Jesus wept.

I only read two pages of this thread. I feel like I have been (temporarily) possessed by someone that walks the streets in their slippers and shouts at pigeons/small children/windmills/etc.

 

[DiyNutJob]

Battery state
12.38v stand alone
12.49v connected to charger
13.73 m-Ohm internal resistance
25% wear life (based on 340EN 374CCA)
189 CCA
Spec: Lion 063 40Ah EN 340CCA, very old

Charger state (no adjustment made from previous)
19mA effective charge current
1.5w mains draw
30v open circuit
29mA open circuit

 

[DiyNutJob]

Battery state
12.41v stand alone
12.5v connected to charger
13.48 m-Ohm internal resistance
26% wear life (based on 340EN 374CCA)
192 CCA
Spec: Lion 063 40Ah EN 340CCA, very old

Charger state (no adjustment made from previous)
20mA effective charge current
1.5w mains draw
30v open circuit
29mA open circuit

 

[DiyNutJob]

The charging slowed to a steady crawl. This is expected given the low charging current. At 20mA, there is no gassing/bubbling, and this is desirable because sealed batteries can't be topped up with water. Also, I don't need to use the battery. Therefore slow charging isn't a problem. I will take weekly reading instead. Given the low stand-alone voltage, there's plenty of capacity remaining for the battery to accept charging.

Battery state
12.42v stand alone
12.52v connected to charger
13.27 m-Ohm internal resistance
27% wear life (based on 340EN 374CCA)
195 CCA
Spec: Lion 063 40Ah EN 340CCA, very old

Charger state (no adjustment made from previous)
20mA effective charge current
1.2w - 1.5w mains draw
30v open circuit
28mA open circuit