Question 1

Can I ran a 4 amp ac air conditioning unit with this? (Using a inverter of course)

Accepted Answer

It depends, how long for.
If the AC unit uses 4 Amps at 110v, that gives you 440 watts.
The battery provides +-13 volts under load, so divide 440 watts by 13 volts gives you +-34 amps of current draw from the battery by the inverter to run the AC unit at 110 volts.

So you could get 2.5 hours of AC use, with a small safety margin before battery must be completely recharged.

But you may see additional efficiency loss from inverter and the ac may require more than 4 amps under certain conditions.

So it would probably be safe to run for no longer than 2 hours on constant use, before completely recharging the battery.

Question 2

Can you use the 14.6v 10a dedicated lifepo4 battery charger to charge this battery? it's a powerqueen charger for my 100ah bettery.

Accepted Answer

Yes any lifepo4 battery charger should be able to charge any lifepo4 battery as long as the voltage is supported by the charger.  You can charge a 12vlt battery with a 12vlt charger but you can't charge a 24vlt battery with a 12vlt charger unless the charger specifically supports 12-24vlt batteries.  The Amp Hour rating of the battery will only affect the amount of time it will take to charge the battery, the higher the rating the longer it will take to charge.

Question 3

Does the battery have internal heating?

Accepted Answer

This battery has no internal heating function yet. We recommend the operating temperature as follows: Charge: 0°C--50°C/32° F to 122°F; Discharge: -20°C--60°C/-4° F to 140° F.

Question 4

Do i need any special bms to put 2x200ah batteries in parallel charging them with solar panels and mppt controller?

Accepted Answer

Our 12.8V 200Ah battery has built-in 100A BMS. You could connect 2x200ah batteries in parallel connection to get a 12.8V 400Ah battery system, and you could charge this battery system by MPPT with solar panels. Pls kindly mention that the charging voltage of the MPPT should be set to 14.4V~14.6V.

ASIN	B09BQSJPTB
Automotive Fit Type	Universal Fit
Battery Capacity	100 Amp Hours
Battery Cell Composition	Lithium-Phosphate
Battery Type	Lithium-Phosphate
Best Sellers Rank	#105,586 in Health & Household ( See Top 100 in Health & Household ) #231 in 12V Batteries
Brand	power queen
Brand Name	power queen
Compatible with Vehicle Type	RV
Customer Reviews	4.6 out of 5 stars 525 Reviews
Included Components	12V 100Ah Mini Bluetooth Battey
Item Dimensions D x W x H	6.82"D x 13"W x 8.84"H
Item Weight	10 Kilograms
Manufacturer	Power Queen
Manufacturer Part Number	9D-EF44-STPN
Manufacturer Warranty Description	5 Year Warranty
Model Number	12V100Ah G31
Number Of Cells	4
Resistance	40 Milliohms
Size	1 Pack
Terminal	M8
Unit Count	1 Count
Vehicle Service Type	RV
Voltage	12.8 Volts

Power Queen 12V 100Ah LiFePO4 Battery, Group 31 Lithium Battery with 1280Wh Energy and BMS Protection, Up to 15000 Deep Cycles for RV Trailer, Solar Off-Grid, Marine

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