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Werker 33Ah AGM Battery Discharge Curve @1A
4/29/2012 8:58:03 AM
This is a test I ran using West Mountain Radio's CBA. I started with a fully charged battery and set the discharge rate to 1A. I set the test to shut off when the battery reached below 11.8, which is 14.5% below the standard operating voltage of 13.8. The outcome was a little surprising, ad I only got 21.7 Ah. This means that the I could run either of my HF radios on receive for 21.7 hours. I'm recharging the battery now, and will be doing tests at 5A and 10A. I will also do some duty cycle based tests as well.
If there are any tests you'd like to see run (I have lots of different types and sizes of batteries), let me know and I'll try to set it up!
If there are any tests you'd like to see run (I have lots of different types and sizes of batteries), let me know and I'll try to set it up!
4/29/2012 12:42:30 PM
Nice analysis.
The Batteries Plus here shows them in stock at $81 - I think that's OK pricing for a 35Ah battery. What'd yours run?
The Batteries Plus here shows them in stock at $81 - I think that's OK pricing for a 35Ah battery. What'd yours run?
4/29/2012 3:46:00 PM
If there are any tests you'd like to see run (I have lots of different types and sizes of batteries), let me know and I'll try to set it up!
I wonder how long a Ten-Tec R4030 (55mA, 9-14V) would run?
4/29/2012 5:44:48 PM
Originally Posted By 6530:
Nice analysis.
The Batteries Plus here shows them in stock at $81 - I think that's OK pricing for a 35Ah battery. What'd yours run?
Nice analysis.
The Batteries Plus here shows them in stock at $81 - I think that's OK pricing for a 35Ah battery. What'd yours run?
This one is from B+ and cost me $92 when I bought it a few months ago. Prices on these seem to fluctuate, as I was there today and saw that they now run $86 in my local store.
4/29/2012 5:45:38 PM
Originally Posted By wdlsguy:
I wonder how long a Ten-Tec R4030 (55mA, 9-14V) would run?
If there are any tests you'd like to see run (I have lots of different types and sizes of batteries), let me know and I'll try to set it up!
I wonder how long a Ten-Tec R4030 (55mA, 9-14V) would run?
If you're really curious about this, I can set the test up to do a 55ma constant draw until the battery hits 10.5 volts. Do you want me to set this test up?
4/29/2012 6:41:59 PM
If you're really curious about this, I can set the test up to do a 55ma constant draw until the battery hits 10.5 volts. Do you want me to set this test up?
I'd hate to tie your test rig up that long. How many hours would you guess though?
4/29/2012 7:16:54 PM
I think you are on to something here
It is nice to have hard discharge data, your testing prompted me to do some testing of my own. I have some current draw figures of the IC-706 and TM-733A on RX under different conditions.
I think we need to get some sort of database going on rig draw. It would give people a better understanding of RX time on backup. Of course any TX time is going to diminish that quickly.
If anyone wants to know the figures I cam up with let me know.
It is nice to have hard discharge data, your testing prompted me to do some testing of my own. I have some current draw figures of the IC-706 and TM-733A on RX under different conditions.
I think we need to get some sort of database going on rig draw. It would give people a better understanding of RX time on backup. Of course any TX time is going to diminish that quickly.
If anyone wants to know the figures I cam up with let me know.
4/29/2012 9:22:50 PM
A half power (50w) simulated contest test would be interesting. This would simulate a busy contest like Field Day. I would guess 10A draw for 5 seconds followed by a 10 second RX cycle @ 1A and cycle between the two.
