Russ Hobbs
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Thank you, I recently purchased this unit, this will make my install much easier.
AC-DC Lifepo4 charger reccomendation?
- Thread starter vtx1029
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Glad that it will help you.
Update 4/17/20: I received the IOTA DLS-55. Upon opening the box containing the LiFePO4 module I read the spec. sheet for the charging parameters (I couldn't locate the charging parameters online). It stated that the bulk/absorption charge is 14.7 volts and the cutoff voltage is 12.8 volts. Bummer. I can't use it with a Battle Born battery as the charge parameters for the Battle Born are bulk/absorption 14.2 - 14.6 and the voltage cutoff is 12.0 volts. So I'll be exchanging it for a PowerMax PM3-55LK 12 Volt, 55 Amp Converter/Charger. This charger can either be set to a single stage constant bulk/absorption voltage (14.2 - 14.6) which is what the Battle Born's BMS accepts or can be set up for 3 stage charging for other batteries (AGM, Gel, Lead Acid). Yes, I did confirm the compatibility before I ordered the IOTA DLS-55 but things happen ... So I'm exchanging the the IOTA DLS-55 for a PowerMax PM3-55LK 12 Volt, 55 Amp Converter/Charge. I'll report back after I complete the install.
FilterGuy
Solar Engineering Consultant - EG4 and Consumers
Bummer!
John Frum
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Did you get the iq4 module?
John Frum
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The lifepo4 should work.
Can you corroborate this claim?
My understanding was that the Progressive Dynamics units do use an actual charge profile. From their website:
Bob B
Emperor Of Solar
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That is probably a natural reduction in the charge current due to the batteries being topped off ..... They don't say the charge controller is doing the reduction.
I see this as well (though doesn't mention the charge wizard voltages for their lithium version, but assume they have understanding of how batteries work):
www.progressivedyn.com
Home 3 - Progressive Dynamics
The Mighty Mini Compact All-In-One System offers an AC/DC Power Distribution Panel and Inteli-Power Converter with Charge Wizard battery charging technology.
www.progressivedyn.com
FilterGuy
Solar Engineering Consultant - EG4 and Consumers
Here is the exchange I had with Progressive Dynamics support.
Me:
I am looking at your PD9100L line of lithium chargers and I do not see anything about multi-stage charge profiles.
It appears from the spec to be a fixed voltage supply. Could you please let me know what the charge profile is with these units?
It appears from the spec to be a fixed voltage supply. Could you please let me know what the charge profile is with these units?
Progressive Dynamics Reply:
Our lithium chargers have a constant voltage output….these are not multi-stage. [I added the bold]
My Reply:
Is that OK for the lithium batteries? Shouldn't the voltage be turned off or at least dropped when the charge is complete?
Progressive Dynamics Reply:
We worked with battle born batteries while designing this unit.
They told us that the charger should not be left on for more than 2-3 weeks once the battery is charged.
If you are a dry camper and use a generator to charge, then the unit will only be on for a few hours at a time.
If you are constantly plugged in, then you may need to periodically shut the converter off for a while
FilterGuy
Solar Engineering Consultant - EG4 and Consumers
I would assume that is true. However the voltage is held constant. It should be dropped low or turned off once the current goes to near zero.
Bob B
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Wow .... That is a totally clueless response.
I guess they figure most people will say ... Hey... a replacement lithium charger .... lets buy one.
Don't know why Battleborn is still partnering with them.
Bob B
Emperor Of Solar
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I'm in total agreement about that .... I was just explaining that the current would reduce even if the voltage didn't.
FilterGuy
Solar Engineering Consultant - EG4 and Consumers
I agree. Battleborn seems to put out a reasonable product and they have a warrantee on their batteries. If someone leaves their camper plugged in and charging with this over the winter it won't be good for their batteries.
BTW: Here is an old thread about the PD 'Charger' issue. https://diysolarforum.com/threads/p...hargers-or-are-they-just-power-supplies.5023/
Jeffjeeptj
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I have 3 Iota DLS-55 with additional modules In various applications. Have used Iota since 2003 in RVs, bench power supply, battery charger And never had a problem. Battleborn advised they talked with Iota but do not like the 14.7V number In the LiFePo module. I have used the Iota to charge my AGM and BB batteries. When the BB is charging I have only seen 14.6V (max) at the battery, then the module reduces to 13.6V. I use a Fluke 87 that was once calibrated in a NIST lab.
i tried to copy the Iota tech sheet for the LiFePo module, but, am not smart enough. It shows high trigger to float at 14.6V, goes to,13.6V.
i tried to copy the Iota tech sheet for the LiFePo module, but, am not smart enough. It shows high trigger to float at 14.6V, goes to,13.6V.
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I have a DLS-45 and have turned down the output voltage on it so that is it putting out 14.6vdc. I was not comfortable with the extra tenth of a volt and did not want to cause any damage to the cells. There is nothing I can find for changing the low trigger of 12.8 vdc, that must be hard coded in the LIFEPO module itself.
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