Cheapest 600am battery i could find shipped from China to my door.

[Kcatdaddy]

This is the specs i have. Should I ask something to find out why the cost is so cheap. This is what the email said: Thanks a lot for your inquiry.
This is Yilia from Mica Power. We are a professional battery manufactuer with about 15 years' experience in rechargeable battery.

The unit price is $1290 FOB Shenzhen. Sample is available.
The dimension is 460（L）*400（W）*250（H）.

General Information
Battery Type	LiFePO4(Lithium Iron Phosphate)
Nominal Voltage	12.8V
Nominal Capacity	600Ah25ºC,C10
Nominal Energy	3468Wh25ºC,C10
Operation Voltage	10~14.6V
Operation Temperature	Charge: 0°C - 45°C | Discharge: -20°C - 60°C
Cycle Life 100%DOD	>3000 cycles (7680Wh25ºC,C10)
Cycle Life 80%DOD	>4000 cycles (6144Wh25ºC,C10)
Cycle Life 50%DOD	>6000 cycles (3840Wh25ºC,C10)
Weight	~63.5 kg
Environment Protection	IP56

BMS/Charge/Discharge
Charge Voltage Max	14.6V
Discharge Cut-off Voltage	10V
Charge Current Max	1C
Discharge Current Max	1C-2C
Self-discharge Rate	<2% per month
Self-discharge Rate	Over-charge protection Over-discharge protection Over current protection Cell balancing function Over temperature protection

 

[MisterSandals]

Nominal Energy

3468Wh25ºC,C10

3468Wh / 12.8V = 270Ah

 

[Bob B]

3468Wh / 12.8V = 270Ah

Yes ... when they have conflicting specs like that steer clear. If it seems too good to be true .... it is.

 

[Kcatdaddy]

When I was comparing info with other top brands, I noticed the difference. So I guess the only existing question from here is, how do I get to 600ah 12v in one battery. Unless the contact notifies me that the spec info was a typo. 600ah LiFePo4 12v single battery is my goal.

 

[Bob B]

In a 2P4S configuration, the 280 AH cells would give you 560 AH and the 310 AH cells would give you 620.

I would search this forum to find reputable suppliers recommended on this forum and get quotes.

 

[Warpspeed]

If one cell dies, you have to toss the WHOLE battery and kiss well over a grand goodbye.

Much better to buy individual cells. If one cell dies its a lot less painful...............

 

[sunshine]

Yes ... when they have conflicting specs like that steer clear. If it seems too good to be true .... it is.

Sometimes it gets lost in translation!
On Mica's website there are 200amp batteries for a 3rd of the quoted price (3 x 200= 600)

 

[Kcatdaddy]

If one cell dies, you have to toss the WHOLE battery and kiss well over a grand goodbye.

Much better to buy individual cells. If one cell dies its a lot less painful...............

I did notice that they were replaceable cells in the box

 

[Kcatdaddy]

Sometimes it gets lost in translation!
On Mica's website there are 200amp batteries for a 3rd of the quoted price (3 x 200= 600)

I sent a reply asking for clarification on the numbers, and to confirm they are grade A cells.

 

[Kcatdaddy]

I have received a response:
This model is 12V 600Ah，nominal energy is 12.8 x 600 = 7680Wh.
The battery cells are 3.2V 200Ah LiFePO4 - 4S3P, Grade A, and the cells are matched.

 

[MisterSandals]

The battery cells are 3.2V 200Ah LiFePO4 - 4S3P, Grade A, and the cells are matched.

EDIT
Looking at the pic, its 3P4S so it should have just one BMS. Hopefully with bluetooth.

 

[Kcatdaddy]

EDIT
Looking at the pic, its 3P4S so it should have just one BMS. Hopefully with bluetooth.

It has bluetooth and CAN communication for an extra $100 so I added it in but then they asked me for the download for the can so I don't know what I'm doing lol

 

[Kcatdaddy]

It says I can add these:
Communication protocol: RS485/RS232/CAN is optional.
What are these, do I need/want these?