PINNED - AGM & GEL battery info lead battery info

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Re: PINNED - AGM & GEL battery info lead battery info

Postby Burgerman » 23 Dec 2020, 20:21

I will go for the best option that you recommend me to improve the life of my batteries, 24V, 13A with this charger I can do the Cv that you mention? or do I need something additional?


A charger is simple. A 2 or 3 stage charger does the following:

1. It charges at its max Amp level, (or the one you chose so it doesent melt the chairs loom or connecting plug) and the battery voltage is gradually lifted at this CC (Constant Current) stage. This is known as BULK by ignorant people. It does this until the voltage reaches the voltage you have choosen. In the case of the MK gel that is a MAX of 14.1V (28.2V for a pair in series). The battery is about 80% charged.

2. As soon as this voltage is reached, a good charger then HOLDS IT SOLID at this 28.20V level (for your MK gel battery). This is the CV stage. This is Constant Voltage. Also called absorption by dummies. During this time, the battery is gradually pulling less and less amps quite naturally. The Amps will drop from the CC maximum Amp stage, over time, usually 8 hours approx, down to a very low level. When it reaches 8 hours of CV or when this current drops to approx 70 to 140mA, whichever occurs first, the battery is 99% charged. At this point the battery is ALMOST fully charged. Now the battery enters FLOAT.

3.The 3rd stage is another constant voltage stage. But at a lower voltage. It completes the charge over another 8 to 20 hours. Depending on battery type/condition etc. This is typically 13.8V (x2 for 2 batteries in series). Most use 13.5 to 13.6V instead because than it can be left indefinitely connected.

4. But on the victron charger I linked to, theres also a long term storage FLOAT level. An even lower voltage that can be left connected indefinitely. This is around 13.4V per battery. So 26.8V on your MK gel. It keeps te battery from discharging, and doesent charge it. Just keeps it at 100%.

So a 3 stage charge looks like this:
Attachments
threestage.png
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Re: PINNED - AGM & GEL battery info lead battery info

Postby BBPYAH » 23 Dec 2020, 20:31

What do you think of this improved model?

https://www.victronenergy.com/upload/do ... AC-EN-.pdf
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Re: PINNED - AGM & GEL battery info lead battery info

Postby Burgerman » 23 Dec 2020, 20:50

Its not an improved one its the waterproof marine one. If it allows the same settings it should be pretty much the same thing.

Heres the PC App. https://updates.victronenergy.com/feeds ... taller.exe
You need this to properly configure a charge algorythm.

Its 12A max power instead of 13. So full power could be used with an XLR plug. Although Anderson is better.

Its in "advanced"... Install and take a look.
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Re: PINNED - AGM & GEL battery info lead battery info

Postby BBPYAH » 23 Dec 2020, 21:10

I already checked the information 13 Amp in Ip65 is only available in 230 to be used in Europe, I am in America banghead Can I use the 12Amp Ip67 can I use that one?

hanged because the Ip65 is only available 24V 5/8A and 12V 4/5/7/10/15A but that is not an option for me czy

Thanks...
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Re: PINNED - AGM & GEL battery info lead battery info

Postby biscuit » 23 Dec 2020, 23:08

The IP65 is a waterproofing and dustproofing standard (ip=ingress protection, I think) so I don't suppose you really need it. But you could probably find a tableon the internet showing IP67, IP65 etc.
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Re: PINNED - AGM & GEL battery info lead battery info

Postby biscuit » 23 Dec 2020, 23:57

Mind you... They call their chargers IP65, IP22 or whatever, and I simply assume that means their ingress protection levels... Maybe it's not that at all! :oops:
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Re: PINNED - AGM & GEL battery info lead battery info

Postby woodygb » 24 Dec 2020, 00:19

biscuit wrote:The IP65 is a waterproofing and dustproofing standard (ip=ingress protection, I think) so I don't suppose you really need it. But you could probably find a tableon the internet showing IP67, IP65 etc.


http://www.dsmt.com/resources/ip-rating-chart/
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Re: PINNED - AGM & GEL battery info lead battery info

Postby Swan T.W. » 24 Dec 2020, 21:04

BBPYAH wrote:This is what I need too, right?

How much do you recommend?

- 12 awg silicone wire
- SB50 anderson

Just use their cable extension with ring terminals. No soldering required.
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