Hi,
understand that Metal 5SHPn Power consumption is 11.5W max.
if i using the 2 x 12V 6800mah, how long the metail 5SHpn can be up as i try to get some calculator to calculate for it but get confused.
appreciated for the help.
thanks.
~14h
hi…
Metal 5SHpn max consumption is 11.5W which = 11500mA…
according to the online website calculator…
1 Battery can only power up the device up to 0.414 hours only…
2x12V=24V
11.5W/24V=0.4792A
6.8Ah/0.4792A=14.19h
UPD:
11500mA=11.5A
Are you sure that is normal for your wire?
Hi, i just refer to the routerboard website which it mentioned max power consumption is 11.5W…
then i use the Watt to mA conversation it shown me the value is 11500mA…
and i getting the wrong idea?
P(W)=I(A)xU(V)
I=P/V
Time to scool now?
i think so…
btw, appreciated it.
You have an unique Metal 5SHPn with 1 volt of supply only!
Dear Deac…
in fact, i really have no ideal about this…
if you don’t mind, you can tell me more which i will learn from it…
1W = 1A * 1V
You can’t “convert” watts to amps and leave the volts out as 0 volts leads to 0 watts, no matter how many amperes you have 
Just trust me.
In case of two sequentially connected 6.8Ah accumulators you will have at least 14 hours.
Amen.
Hi, noted…
really appreciated it.
11.5W is just the maximum, at maximum speed in low rates. Normally you will see 5-7W
Roughly, the metal will be 500mA. We could argue day and night about the exact consumption, but we will have to consider an acceptable value considering it may only be transmitting periodically and even less during the night.
If both batteries are wired in parallel, then the Volts remain 12V and the capacity doubles. If each battery is 6.8Ah, then the pair are 13.6Ah.
So 13.6/0.5 = 27 hours
Maybe a safe get would be 18 since when the volts drop below 9-10, the routerboard will stop.
And I don’t have the discharge curves in front of me.
Running in series (higher voltage, lower current) provides higher efficiency in the cabling (important for long runs). If the batteries are being directly connected to each other it will prevent a failed battery from discharging the working one below it’s rated depth of discharge. It would be best to use the batteries depth of discharge rating (often they have cycles listed at 40%, 60%, 80%) for your use case. Often I see 200 cycles to 80% and many more cycles to 40%.