TheBackShed.com

Forum Index : Electronics : Charging info for EnerSys 2T500/2 cells

Author

Message

sPuDd

Senior Member

Joined: 10/07/2007
Location: Australia
Posts: 251

Posted: 12:39pm 10 Jul 2007

Copy link to clipboard

Print this post

First up thanks to RossW, as I now have 24x EnerSys 2T500/2 500Ahr cells.
I bought these from 63ute on eBay after seeing your posting on the ones you bought.
http://myworld.ebay.com.au/63ute if looking for great deals on batts.

Now, all I can find on the EnerSys site is the info on discharging the cells.
I cannot find any specific info on charging other than a float charge of 2.265Vpc @ 25degC.
I intend to use the Outback 48V inverters with this setup, what should I be setting the charge to?
What about equalisation? Bulk, absorb etc?
Are these more like a gel cell, where you just set them for 13.8V and leave? I know the AGM's
hate the sort of high voltages that a wet cell can absorb.

Help much appreciated.

PS: I have some experience with this stuff and I'm an old school electronic tech by trade.

It should work ...in theory

RossW
Guru

Joined: 25/02/2006
Location: Australia
Posts: 495

Posted: 08:15pm 10 Jul 2007

Copy link to clipboard

Print this post

I have the manufacturers details here, if you like:

http://house.albury.net/07sep2006/TSafe-manual.pdf
http://house.albury.net/07sep2006/TSafe-summary.pdf

Cheers,

sPuDd

Senior Member

Joined: 10/07/2007
Location: Australia
Posts: 251

Posted: 11:24am 11 Jul 2007

Copy link to clipboard

Print this post

Thanks RossW,

if I read it right, fast charging for a 500Ah cell
would be 0.1 to 0.125 times capacity:
0.1 x 500 = 50amps
0.125 x 500 = 62.5amps

This would be done at 2.40Vpc for 10-15hrs max,
and only once a month.

I also figure that it would require about 0.08 to 0.1
times capacity for normal charging. 40-50amps.

That should suffice. I'm planning on about 2kW of
solar for now, and a few large wind gens in final
location. With Outback hardware in control this
strict regime should be easy enough.

sPuDd..

It should work ...in theory

AMUN-RA

Senior Member

Joined: 10/03/2007
Location: Australia
Posts: 144

Posted: 09:14pm 11 Jul 2007

Copy link to clipboard

Print this post

sPuDd have you already got all your outback gear if not can quote for you from townsville also sharp solar panels 0428626707 Mick.

Every day the sun shines
& gravity sucks= free energy.

RossW
Guru

Joined: 25/02/2006
Location: Australia
Posts: 495

Posted: 11:23pm 11 Jul 2007

Copy link to clipboard

Print this post

AMUN-RA said sPuDd have you already got all your outback gear if not can quote for you from townsville also sharp solar panels 0428626707 Mick.

Mick, I've already sent Trev a query on Panels, so I'll give you the same option (I'd like to support the locals if I can)...

I had a couple of panels stolen early this week (NOT HAPPY!)

I'm looking for some panels for my 48V system, but a bit cash-strapped at the moment. Looking for "best bang for buck" and ideally something I can expand later. To this end, considering two 210W/24V panels. Would consider 12V panels if price was competetive enough.

Can contact me via the board, or ph 0409-578-660 tks.

Print this page

To reply to this topic, you need to log in.