Template:X120x-FAQ: Difference between revisions

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Q9: What battery is recommended for this ~~ups~~ shield

Q9: What battery is recommended for this UPS shield?

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If using a lithium battery, the required voltage is 3.7V;

If using a battery pack or battery holder, please make sure it is a parallel battery pack. Please use a high-quality battery holder with thick and durable connection cables. Using a low-quality battery holder with thin or poorly connected wires may cause the X1203 to malfunction or fail to operate as expected.

If using a battery pack or battery holder, please make sure it is a parallel battery pack. '''Please use a high-quality battery holder with thick and durable connection cables. Using a low-quality battery holder with thin or poorly connected wires may cause the X1203 to malfunction or fail to operate as expected.'''

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'''Please note: If the UPS does not detect the RPi5, it will automatically shut down within 3 seconds. So you need to install the RPi 5 on the UPS and make sure that the RPi5 has good contact with the UPS's pogo pins.'''

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Q15. Which product should I choose if I can’t connect to a Raspberry Pi via pogo pins?

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A:

For the X12-UPS series, we recommend the '''[[X1206]]''' – models from X1200 to X1205 do not support this usage. The X120- UPS series auto-powers off when no Raspberry Pi 5 is detected, while the X1206 can be set to "Always Power On" mode and keeps working even if the Raspberry Pi is shut down. Please refer to <span style="color:red">'''Interface ⑩_ALON'''</span> in the picture.

[[File:X1206-IMG-7240-Interface-New.jpg|800px]]

You can also consider the '''[[X-UPS1]]'''. It features a GPIO Pin-Connected standalone design with high flexibility for installation and adaptation (refer to the picture).

[[File:X-UPS1-IMG-5409.jpg|800px]]

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Q16. Questions about reverse-polarity protection

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'''Q. Does the X1200 series have reverse-polarity protection? What happens if I insert a single cell backward?'''

A: Yes. The X1200 series features hardware-level reverse-polarity protection circuitry. If only one 18650/21700 cell is installed and it is inserted backward, the board will immediately enter a protection state and disable all functionality. This blocks reverse current from reaching or damaging the downstream charging and system circuits.

'''Q.What happens if one cell is inserted correctly and the other is reversed for X1200?'''

A: The board is safely protected by dedicated inline fuses. Each individual battery slot on the X1200 is integrated with its own 5A rated fuse.

If a user inserts one cell correctly and the second cell backward, the massive loop current generated between the two cells will instantly blow the 5A fuse of the reversed slot. This isolates the faulted battery holder and completely protects the rest of the board and the correctly installed cell from damage.

⚠️ Warning: Despite these robust hardware safeguards, always ensure the correct polarity when installing batteries. Relying on protection states should be a last resort.

'''Q: What are the exact over-current and short-circuit protection thresholds for X1200?'''

A: The X1200 utilizes a two-tier protection architecture to handle short-circuits and over-current conditions:

* '''Slot Level:''' Each 18650 battery holder is inline with a bidirectional 5A fuse that blows immediately if individual slot current exceeds 5A.

* '''System Level:''' After the two slots parallel together, the power rail passes through a dedicated battery protection IC. The hardware over-current trip threshold for this IC is 10.5A to 19.5A.

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@@ Line 201: / Line 201: @@
 <div class="toccolours mw-collapsible mw-collapsed">
 <div style="font-weight:bold;line-height:1.0;">
-Q9: What battery is recommended for this ups shield
+Q9: What battery is recommended for this UPS shield?
 </div>
 <div class="mw-collapsible-content">
@@ Line 210: / Line 210: @@
 If using a lithium battery, the required voltage is 3.7V;
-If using a battery pack or battery holder, please make sure it is a parallel battery pack. Please use a high-quality battery holder with thick and durable connection cables. Using a low-quality battery holder with thin or poorly connected wires may cause the X1203 to malfunction or fail to operate as expected.
+If using a battery pack or battery holder, please make sure it is a parallel battery pack. '''Please use a high-quality battery holder with thick and durable connection cables. Using a low-quality battery holder with thin or poorly connected wires may cause the X1203 to malfunction or fail to operate as expected.'''
@@ Line 283: / Line 283: @@
 '''Please note: If the UPS does not detect the RPi5, it will automatically shut down within 3 seconds. So you need to install the RPi 5 on the UPS and make sure that the RPi5 has good contact with the UPS's pogo pins.'''
+</div>
+</div>
+<div class="toccolours mw-collapsible mw-collapsed">
+<div style="font-weight:bold;line-height:1.0;">
+Q15. Which product should I choose if I can’t connect to a Raspberry Pi via pogo pins?
+</div>
+<div class="mw-collapsible-content">
+A:
+For the X12-UPS series, we recommend the '''[[X1206]]''' – models from X1200 to X1205 do not support this usage. The X120- UPS series auto-powers off when no Raspberry Pi 5 is detected, while the X1206 can be set to "Always Power On" mode and keeps working even if the Raspberry Pi is shut down. Please refer to <span style="color:red">'''Interface ⑩_ALON'''</span> in the picture.
+[[File:X1206-IMG-7240-Interface-New.jpg|800px]]
+You can also consider the '''[[X-UPS1]]'''. It features a GPIO Pin-Connected standalone design with high flexibility for installation and adaptation (refer to the picture).
+[[File:X-UPS1-IMG-5409.jpg|800px]]
+</div>
+</div>
+<div class="toccolours mw-collapsible mw-collapsed">
+<div style="font-weight:bold;line-height:1.0;">
+Q16. Questions about reverse-polarity protection
+</div>
+<div class="mw-collapsible-content">
+'''Q. Does the X1200 series have reverse-polarity protection? What happens if I insert a single cell backward?'''
+A: Yes. The X1200 series features hardware-level reverse-polarity protection circuitry. If only one 18650/21700 cell is installed and it is inserted backward, the board will immediately enter a protection state and disable all functionality. This blocks reverse current from reaching or damaging the downstream charging and system circuits.
+'''Q.What happens if one cell is inserted correctly and the other is reversed for X1200?'''
+A: The board is safely protected by dedicated inline fuses. Each individual battery slot on the X1200 is integrated with its own 5A rated fuse.
+If a user inserts one cell correctly and the second cell backward, the massive loop current generated between the two cells will instantly blow the 5A fuse of the reversed slot. This isolates the faulted battery holder and completely protects the rest of the board and the correctly installed cell from damage.
+⚠️ Warning: Despite these robust hardware safeguards, always ensure the correct polarity when installing batteries. Relying on protection states should be a last resort.
+'''Q: What are the exact over-current and short-circuit protection thresholds for X1200?'''
+A: The X1200 utilizes a two-tier protection architecture to handle short-circuits and over-current conditions:
+* '''Slot Level:''' Each 18650 battery holder is inline with a bidirectional 5A fuse that blows immediately if individual slot current exceeds 5A.
+* '''System Level:''' After the two slots parallel together, the power rail passes through a dedicated battery protection IC. The hardware over-current trip threshold for this IC is 10.5A to 19.5A.
 </div>
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