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Table 2: Comparing UpTime family
Tiny-UPS
PiZ-UpTime 2.0
Pi-UpTime UPS 2.0
Functionality
“In
-
Line” UPS for USB
Power, inline to USB
Power
UPS for a Pi-Zero or Pi-
A, typically mounted
on a Pi-Zero or Pi-A
UPS for a Pi-4, Pi-3 etc.
Typically mounted on a
Pi-4 or Pi-3
Battery Chemistry
Li-Ion or Li-Polymer
Li-Ion or Li-Polymer
Li-Ion, Li-Polymer
or Li-
Phosphate
, jumper
selectable.
Battery connection
External via Terminal
Block
External via Terminal
Block
Onboard two 18650
battery or External
battery via Terminal
Block
Max Current
2A
2A
2.5A
Output V
5V±2% regulated
5V±2% regulated or Vin
from Power supply
5V±2% regulated or Vin
from Power supply
Indicator /
measurement
Battery low via GPIO.
Power off via GPIO
Vin, Vout, Battery V
and temperature
monitored via on board
12-bit ADC
Vin, Vout, Battery V
and temperature
monitored via on board
12-bit ADC
Shutdown routine
Sample Python code
provided
Sample Python code
provided
Sample Python code
provided
Adjust battery level to
trigger shutdown
No
Yes, controlled in
software
Yes, controlled in
software
LEDs
Charging, charge
complete
Charging
Charging. UPS on when
Input V < 4.8V (brown-
out)
Charge current
1A
0.5A
1.2A
Models supported
Any, up to 2A current
Pi-Zero and others
All, including Pi-4
Max battery capacity
No upper limit
–
takes
longer to charge
No upper limit
–
takes
longer to charge
No upper limit
–
takes
longer to charge
Vin Power supply
Via micro USB only
Via micro USB or
terminal block
Via USB-C, micro USB
or terminal block
UPS Vout
5V, via micro USB or
terminal block (not
provided)
5V via micro USB or
terminal block
5V via micro USB or
terminal block.
3.3V, 0.7A via terminal
block
I
2
C bus access for
external sensors
None
None
I
2
C connection to the Pi
is accessible via
terminal block for
external sensors etc.
GPIO
External. Jump wires
needed to connect to
Pi or another device.
No GPIO used
No GPIO used
