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X728
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A: Please enable 'AUTO POWER ON' or 'AUTO ON' function if you want restart when the AC Power supply is reapplied.
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<div class="toccolours mw-collapsible mw-collapsed">Q4: About auto shutdown, found your board auto shutdown. A: Please check if enable the ASD function (shorted the ASD header), if you enable the ASD function, please make sure your operation is right: first, place the battery into the battery holder, insert the jumper to ASD header <span div style="colorfont-weight:redbold;line-height:1.0;">after 3 seconds</span>,this is very important!! Q5:Is the recharge threshold and terminal battery voltage adjustable? I want to keep the batteries between 80% and 20% A: Sorry, this is not support. Q6Q: Which GPIO is used to power the X728-A1 cooling fan?</div><div class="mw-collapsible-content">
A: The X728-A1 does not occupy the GPIO, it use the PIN 2,4 to provide the power.
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Q: Are the batteries on X728 hot-swappable? In other words, can I connect an external power supply and swap the batteries out while that is on?
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A: Sorry, the batteries on X728 is not support hot-swappable. Please cut off the power to swap the batteries.
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Q: What will lead to the X728 board be burnt out?
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A: Please make sure the polarity of battery is "+" to "+" and "-" to "-" and match with the "+" "-" mark on battery holder. The battery protection chip IC will be over-current, heat and then burnt if one or two of the batteries are connected reversely. PS: the X728 board will not be burnt immediately if one or two of the batteries are connected reversely.
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<div class="toccolours mw-collapsible mw-collapsed">Q11<div style="font-weight:bold;line-height:1.0;">Q: What frequency does X728 use in the I2C communication bus used to communicate with RPI?</div><div class="mw-collapsible-content">
A: It depends on the motherboard and OS, please refer to this topic as reference: https://forums.raspberrypi.com/viewtopic.php?p=312582
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<div class="toccolours mw-collapsible mw-collapsed"><div style="font-weight:bold;line-height:1.0;">Q12Q: What the maximum current rating of X728-A1 is?</div><div class="mw-collapsible-content">
A: The maximum current rating of X728-A1 is 90MA.
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