Template:X120x-FAQ - Revision history

Cindy at 10:47, 30 June 2026

2026-06-30T10:47:23Z

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	⚠️ Warning: Despite these robust hardware safeguards, always ensure the correct polarity when installing batteries. Relying on protection states should be a last resort.		⚠️ 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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Cindy at 10:42, 30 June 2026

2026-06-30T10:42:52Z

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

Cindy at 10:42, 30 June 2026

2026-06-30T10:42:09Z

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Ruby at 07:03, 27 January 2026

2026-01-27T07:03:22Z

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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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Cindy at 06:20, 12 November 2025

2025-11-12T06:20:14Z

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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 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.'''

Cindy at 04:38, 12 November 2025

2025-11-12T04:38:04Z

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

	if using a battery pack, please make sure it is a parallel battery pack.		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.


	There are 2 XH2.54-2P battery connectors on board, it is recommended to use the same type of battery.		There are 2 XH2.54-2P battery connectors on board, it is recommended to use the same type of battery.

Harry at 06:52, 4 September 2025

2025-09-04T06:52:51Z

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	[https://www.analog.com/media/en/technical-documentation/data-sheets/MAX17040-MAX17041.pdf MAX17040G+]		[https://www.analog.com/media/en/technical-documentation/data-sheets/MAX17040-MAX17041.pdf MAX17040G+]
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			Q14. Why does the RPI 5 lose power within a few seconds after pressing the power button on the X120x UPS?
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			A:

			'''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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Ivy at 07:40, 24 July 2025

2025-07-24T07:40:08Z

Harry at 07:27, 24 July 2025

2025-07-24T07:27:46Z

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	BATT_V volt(25)=0.00000000V		BATT_V volt(25)=0.00000000V
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	Please check the voltage value of <mark>EXT5V_V</<mark> line		Please check the voltage value of <mark>EXT5V_V</mark> line
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Harry at 07:27, 24 July 2025

2025-07-24T07:27:29Z

← Older revision		Revision as of 15:27, 24 July 2025
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	BATT_V volt(25)=0.00000000V		BATT_V volt(25)=0.00000000V
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			Please check the voltage value of <mark>EXT5V_V</<mark> line
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	A:Regarding the low voltage warning issue:		A:Regarding the low voltage warning issue(Please refer to Q1 to check whether the connection is installed correctly):
	* Please carefully check whether your hardware installation is secure and if the pogo pins are making proper contact. We have had cases where customers found that loose brass standoffs caused poor contact with the pogo pins, leading to the low voltage warning.		* Please carefully check whether your hardware installation is secure and if the pogo pins are making proper contact. We have had cases where customers found that loose brass standoffs caused poor contact with the pogo pins, leading to the low voltage warning.
	* It may be caused by an OS update. Please confirm whether you have recently updated the OS or if your OS system updates automatically.		* It may be caused by an OS update. Please confirm whether you have recently updated the OS or if your OS system updates automatically.
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	Q: How to disable '''auto power on''' feature on [[X1200]]?		Q4: How to disable '''auto power on''' feature on [[X1200]]?
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	Q: How to disable '''auto power on''' feature on [[X1203]]?		Q7: How to disable '''auto power on''' feature on [[X1203]]?
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	Q: Why is the RPi5 LED still on and red after the UPS is turned off?		Q8: Why is the RPi5 LED still on and red after the UPS is turned off?
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	Q: What battery is recommended for this ups shield		Q9: What battery is recommended for this ups shield
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	Q: Run <code>sudo i2cdetect -y 1</code>, can't find I2C address 0x36?		Q10: Run <code>sudo i2cdetect -y 1</code>, can't find I2C address 0x36?
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	Q. How do you disable the X1202 auto-shutdown when you use it standalone (not installed on a RPi5)?		Q11. How do you disable the X1202 auto-shutdown when you use it standalone (not installed on a RPi5)?
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	Q. X1203 UPS voltage drops / low voltage warning appears?		Q12. X1203 UPS voltage drops / low voltage warning appears?
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	Q. Documentation about the I2C registers：		Q13. Documentation about the I2C registers：
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