T208 is the upgrade version of T200, supports upto 6-cell 18650 battery, can provide enough power supply for your outdoor scientific research. We no longer use cable connections and use new and more reliable GPIO connections.
The T208 is an advanced uninterruptible power supply (UPS) expansion board specially designed for NVIDIA Jetson Nano Developer Kit. It provides Max 5.1V 8000mA Power Backup for even the most demanding Jetson Nano set ups, intelligent & safe power management, AC power loss/ power adapter failure detection, auto power-on, full poweroff from software, advanced system power path management, i2c & LED fuel-gauge systems, and with 6-cell 18650 battery holder.
==NEWUpdate History=={| class="wikitable"! FOR USE WITH !! Jetson Nano|-| OPERATING SYSTEM || All operating systems|-| KEY FEATURES || <b>Smart and powerful Uninterruptible Power Supply (UPS)</b>Provides continuous operations for up to 10~30hours (depending on battery type and qty used)Max 5==T208 V2.1V 8000mA Power Backup for even the most demanding Jetson Nano set ups0=== 6-cell 18650 lithium Ion holderCan work with 1/2/3/4/5/6 18650 lithium Ion batteriesSupports 3A fast battery chargingIntegrated battery protection circuitIntegrated over current protection and over voltage protectionIntegrated Maxim's fuel-gauge systems (Reading battery voltage and percentage via i2c)Integrated TI's 10-A fully-integrated synchronous boost converterIntelligent automatic charging and discharging 'On-board 4 green LEDs indicate battery charging and discharging levels of 25%July 15th 2022, 50% , 75% and 100%On-board blue LED show the status of power on/offIntelligent and safe power managementOn-board push button T208 is updated to control power on /off - Press-ON, Hold the button pressed at least 3s -OFF)AC power loss or power adapter failure detection (LED and GPIO indication)Automatic powering off after system shutdown using the GUIOptional to enable Auto power on when power applied or restoredUltra-low standby power consumption of μA to maximize battery lifeIntegrated IN-to-SYS pass-through path to pass the input voltage to the systemOperate in both charge mode and boost mode to allow full system management and battery power managementT208 V2.0:'''
Advanced system * Improved power -path management avoids frequent charging and extend batteries discharging when power adapter connected* Improved Auto power-on reliability* Adds jumper selection ('''FON''', Force ON) to disable auto power-off when Jetson Nano is not detected (see note1)* Removed jumper secleciton for '''PLD''' (Power loss detection), '''PLD''' is always enabled* Adds battery lifeReverse polarity protection circuit & LED indiciators
Advanced system power path management allows 3A fast charging and powering Note1: If '''FON''' is enabled (jumper inserted), T208 cannot turn off automatically when Jetson Nano at the same timeis turned off
Powers the Jetson Nano via the 40-pin header - no additional cabling required===T208 V1.2==='''On Augest 10th 2021, T208 V1.2 is updated to added input surge protection circuit.'''
Power input jack (5.5==SAFETY INSTRUCTIONS AND WARNINGS==*2.5mm) <span style="color:red;">You must read these safety instructions and XH2warnings before charging your batteries.54 connector convenient for power inputOn* <span style="color:red;">Lithium Polymer and Li-board PH2ion batteries are volatile.0 connector allows Failure to connect external power switch read and follow the below instructions may result in fire, personal injury and DIY your perfect caseOn-board XH2damage to property if charged or used improperly.54 power output connectors allow to power other devicesMounting holes * <span style="color:red;">Never make wrong polarity connection when charging and standoffs provide mechanical stability discharging battery packs. Always double check polarity of the Jetson Nano battery's connector to make sure "+" to "+" and T208 assembly|"-" to "-". | SPECIFICATIONS ||Power input* <span style="color: 5Vdc ±5%red;">Do not mix and use old batteries and new batteries, ≥4AUPS output: 5or batteries with different brand names.1V ±5% Max 8AUPS charging current* <span style="color: 2A via Micro-USB socketred;">Lithium batteries has it's cycle life, please replace old battery with new one when it reaches it's service life or when it is two year old, 3A via DC jackTerminal Battery Voltage: 4whichever comes first.24VRecharge Threshold?* <span style="color: 4red;">When charging Battery Pack, please put battery in a fire proof container.1V|-| NOTES ||Do not apply power to your Jetson Nano via Please don't leave the T208 on the Micro USB socket wood material or power jackcarpet and unattended. * <span style="color:red;">Must keep the T208 away from children.Do not use *Please watch Main Video and Tutorial Video regarding 18650 battery with built-in protection circuit|}batteries at: https://www.staysafebattery.com/en/
==Features==
* Intelligent automatic charging and discharging
* On-board 4 green LEDs indicate battery charging and discharging levels of 25%, 50% , 75% and 100%
* On-board blue LED show the status of power on/off(blue LED for T208 V1.2 and previous version, green LED for T208 V2.0)
'''Intelligent and safe power management'''
* AC power loss or power adapter failure detection (LED and GPIO indication)
* Automatic powering off after system shutdown using the GUI
* Optional to enable Auto power on when power applied or restored(please enable the AUTO ON on jetson nano board if you want to use the AUTO ON of T208)
* Ultra-low standby power consumption of μA to maximize battery life
* Integrated IN-to-SYS pass-through path to pass the input voltage to the system
* Power input : 5Vdc ±5%, ≥4A
* UPS output : 5.1V ±5% Max 8A
* UPS charging current: 2A via Micro-USB socket, 3A via DC jack
* Terminal Battery Voltage : 4.24V
* Recharge Threshold : 4.1V
* 1 x Power & GPIO daughter board
* 1 x Jumper link Pitch 2.54mm
* 1 2 x Spacer M/F M2.5x12+6 mm
* 4 x Spacer F/F M2.5x22 mm
* 4 x Spacer M/F M2.5x23+6 mm
==User Manual==
[http://www.suptronics.com/T[T208-series/Software]] [[T208-softwarehardware]] ==FAQ=='''Q1: Can I turn ON and use a jetson nano power by the T208 while the T208 is charging?''' A: Yes, OK, the T208 is support charging while discharing.html '''Q2: Is there any possibility to change the I2C address of the T208-Software]?''' A: Sorry, no, not support to change the I2C address of the T208. '''Q3: What battery is recommended for X708?'''
[httpA: * Pls use high quality batteries from PANPASONIC, Toshiba, etc.* Lithium battery need to meet following 2 conditions://www1.suptronicsWorking voltage: 3.com/T6V-series/T2083.7V; 2. Maximum voltage after full: 4.2V* Do not use the battery with built-in protection circuit[[File:18650_battery_size-hardware2.html T208-hardwarejpg|400px]]