Is the recharge threshold and terminal battery voltage adjustable? I want to keep the batteries between 80% and 20%

No. I don't think this is possible, unlesss you write a script that monitors the voltage or % of charge, and open a relay that would cut off the power input to the system... You would need some external equipment (arduino?) for that.

Are the batteries hot-swappable? In other words, can I connect an external power supply and swap the batteries out while that is on?

Hi friend, Sorry that the X728 on board 18650 batteries does not support hot-swappable, please swap the batteries after power cut off. best regards, Geekworm Team

Does the rtc have a separate battery? or does it run on the 18650 batteries? what happens if you remove them? will it "lose" time?

Hi friend, The RTC function runs on the 18650 batteries. It will "lose" time if you remove the 18650 batteries. best regards, Geekworm Team

Can I use more than two batteries with the x728?

It holds two batteries, it does have an second input for more battery boards.

X728 | Desertcart Bolivia

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Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

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Sold byAmazon BoliviaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🔌 Power your Pi like a boss — never miss a beat with Geekworm X728!

COMPACT YET MIGHTY - Sleek, space-saving form factor with Type-C and DC jack inputs, delivering up to 30.6W output — perfect for professional setups demanding reliability.
SMART BATTERY INTELLIGENCE - Stay ahead with real-time battery capacity monitoring and automatic low battery shutdown to protect your projects.
EFFORTLESS POWER MANAGEMENT - Experience safe shutdowns, auto power-on, and full software-controlled power off for ultimate convenience and device longevity.
EXPANDABLE STACKABLE DESIGN - Reserve the 40-pin header to stack with other Pi accessories or SSD shields, unlocking powerful data backup and enhanced applications.
UNINTERRUPTED POWER UNMATCHED CONTROL - Seamlessly keep your Raspberry Pi 4 running with a robust 5.1V 5A UPS backup that handles power outages like a pro.

The Geekworm X728 UPS & Power Management Board delivers a reliable 5.1V 5A power backup solution tailored for Raspberry Pi 4/3 series. Featuring intelligent battery monitoring, safe auto shutdown, and RTC support, it ensures uninterrupted operation and data safety. Its compact design supports stacking with other Pi accessories, making it an essential upgrade for professionals seeking seamless power continuity and expandability.

Specifications

ASIN	B087FXLZZH
Amperage	6 A
Battery Cell Type	Lithium Ion
Best Sellers Rank	#540 in Computer Uninterruptible Power Supply Units
Brand	Geekworm
Color	X728
Connector Type	Type-C, DC jack
Customer Reviews	4.2 4.2 out of 5 stars (91)
Enclosure Material	Plastic
Form Factor	Compact
Input Voltage	5 volts
Item Dimensions	3.35 x 2.52 x 1.38 inches
Item Dimensions D x W x H	3.35"D x 1.38"W x 2.52"H
Item Highlight	AC Power Loss Detection, Auto Power on, Safe Shutdown, Battery Capacity Reading, Low Battery Auto Shutdown, Buzzer
Item Weight	0.06 kg
Manufacturer	Geekworm
Maximum Power	30.6 watts
Mfr Part Number	TB-2019-71
Model Number	X728
Number of Items	1
Number of Outlets	1
Output Current	6000 milliamps
Output Voltage	5.1 volts
Output Wattage	30.6 watts
Power Plug Type	No Plug
Runtime	30 hours
Voltage	5.1 volts
Warranty Description	3 months
Wattage	30.6 watts

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