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Search took 0.00 seconds. Search: Posts Made By: Yoshimura
Forum: Electrical | Charging, Systems, Solar and Generators 07-21-2020, 02:10 PM
Replies: 41
Views: 3,356
Posted By Yoshimura
This is very interesting. The LFP will...

This is very interesting.

The LFP will initially supply the loads because of its higher nominal voltage and flat discharge curve?

Thanks for the schematic!
Forum: Electrical | Charging, Systems, Solar and Generators 07-19-2020, 07:29 PM
Replies: 41
Views: 3,356
Posted By Yoshimura
When lithium stop charging, energy in the...

When lithium stop charging, energy in the alternator must go somewhere and the AGM is used to absorb this energy. Otherwise, your alternator diodes will burn out. From you schematic, it seems you use...
Forum: Electrical | Charging, Systems, Solar and Generators 07-19-2020, 12:00 AM
Replies: 41
Views: 3,356
Posted By Yoshimura
I might also simply install a second AGM or even...

I might also simply install a second AGM or even simpler, make a custom Voltstart (remote starter + voltage comparator).
Forum: Electrical | Charging, Systems, Solar and Generators 07-18-2020, 11:58 PM
Replies: 41
Views: 3,356
Posted By Yoshimura
Since I never boondock for more than one night, I...

Since I never boondock for more than one night, I will let the DC/DC charger charges the lithium when the engine is running (using the ignition input) or when on shore power. However, I was wondering...
Forum: Electrical | Charging, Systems, Solar and Generators 07-18-2020, 11:44 PM
Replies: 41
Views: 3,356
Posted By Yoshimura
:-) I still need to do some homework.

:-)

I still need to do some homework.
Forum: Electrical | Charging, Systems, Solar and Generators 07-18-2020, 11:43 PM
Replies: 41
Views: 3,356
Posted By Yoshimura
The DC/DC charger doesn't care where the input...

The DC/DC charger doesn't care where the input voltage come from. It will simply convert it to the appropriate voltage to charge the lithium.
Forum: Electrical | Charging, Systems, Solar and Generators 07-18-2020, 11:35 PM
Replies: 41
Views: 3,356
Posted By Yoshimura
Battleborn 100Ah. My inverter/charger is...

Battleborn 100Ah.

My inverter/charger is set to 38A (probably its maximum). For the DC/DC charger, Battleborn recommend .5C charge current so probably between 30A and 60A.
Forum: Electrical | Charging, Systems, Solar and Generators 07-18-2020, 11:30 PM
Replies: 41
Views: 3,356
Posted By Yoshimura
I assumed all 12v to 12v chargers were boost/buck...

I assumed all 12v to 12v chargers were boost/buck type.
Forum: Electrical | Charging, Systems, Solar and Generators 07-18-2020, 11:24 PM
Replies: 41
Views: 3,356
Posted By Yoshimura
On the Sterling Power charger, the input voltage...

On the Sterling Power charger, the input voltage is ignored if the Ignition input is > 4V. The Low voltage trip (default 10.0V) can be configured.
...
Forum: Electrical | Charging, Systems, Solar and Generators 07-18-2020, 10:27 PM
Replies: 41
Views: 3,356
Posted By Yoshimura
Some chargers (for example Sterling Power) have...

Some chargers (for example Sterling Power) have an Ignition input that is normally connected to the ignition feed. You just need to connect it to 12V.
Forum: Electrical | Charging, Systems, Solar and Generators 07-18-2020, 10:05 PM
Replies: 41
Views: 3,356
Posted By Yoshimura
The lithium is charged by the DC/DC charger which...

The lithium is charged by the DC/DC charger which has the proper charge profile for lithium. The AGM is still charged the same way as before.
Forum: Electrical | Charging, Systems, Solar and Generators 07-18-2020, 08:50 PM
Replies: 41
Views: 3,356
Posted By Yoshimura
Make sense. If the DC/DC charger is 50A and...

Make sense.

If the DC/DC charger is 50A and the Inverter/Charger is 15A, 35A will be drained from the AMG until the battery volage drops below the stop threshold, right? Then, the 15A will go to...
Forum: Electrical | Charging, Systems, Solar and Generators 07-18-2020, 08:42 PM
Replies: 41
Views: 3,356
Posted By Yoshimura
I just want to increase my evening / night DC...

I just want to increase my evening / night DC capacity and this seems a very easy way. Particularly the fact that I could wire everything inside using 6 AWG cables.

No, not build yet. But a online...
Forum: Electrical | Charging, Systems, Solar and Generators 07-18-2020, 07:14 PM
Replies: 41
Views: 3,356
Posted By Yoshimura
Both are not connected together so I'm not sure I...

Both are not connected together so I'm not sure I understand your comment. Lithium will power the DC and the AGM will power AC though the inverter. And each battery has it own charger.
Forum: Electrical | Charging, Systems, Solar and Generators 07-18-2020, 07:03 PM
Replies: 41
Views: 3,356
Posted By Yoshimura
Yes, this is a second alternator but with an...

Yes, this is a second alternator but with an internal voltage regulator. So no charging profile (... has a set point of 14.7 volts cold and 14.2 volts hot if batteries are at full charge).
...
Forum: Electrical | Charging, Systems, Solar and Generators 07-18-2020, 04:20 PM
Replies: 41
Views: 3,356
Posted By Yoshimura
Will both batteries discharge at the same time?

I'm considering adding a lithium battery and a DC/DC charger to my Roadtrek Simplicity (see attached schema).

When boondocking (assuming inverter is turned off and engine is not running), will...
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