Tenergy TN261 User manual

2-Bay LCD Smart Universal Charger
TN261
USER MANUAL
MAIN FEATURES
1. Supports all common cylindrical rechargeable battery types and sizes: NiMH/NiCd (1.2V):
AA, AAA, C, D Li-ion (3.7V): 26650, 22650, 26500, 18650, 17670, 18490, 17500,
17335, 16340 (rechargeable CR123A), 14500 (AA), 10440 (AAA)
2. Four selectable current settings (500mA, 1000mA, 1500mA, 2000mA) to suit your need.
3. Large, easy-to-read blacklit LCD screen lets you know the charging status (state-of-charge
%) and battery voltage at a glance, even in the dark!
4. Power bank function allows you to insert your own Li-ion batteries and use TN261 as a
power bank to charge your portable devices on the go!
5. Complete protection against over-charging, over-discharging, short-circuit, and
reverse-polarity.

SPECIFICATIONS
Input (ACAdapter)
DC 12V 3A
Output DC 4.2V 500mA/1000mA/1500mA/2000mA (Charging Li-ion)
DC 1.2V 500mA/1000mA/1500mA/2000mA (ChargingNiMH/NiCd)
DC 5.0V 1000mA-2400mA (USB output during Power BankMode)
Battery Type NiMH, NiCd, Li-ion
Dimensions 145mm x 76mm x 31mm / 5.7” x 3.0” x 1.2”
Weight 133 g/ 4.69 oz
Protection Features Over-charged,over-discharged,short-circuit, reverse-polarity
PACKAGE CONTENTS
TN261 Charger x 1, AC Adapter x 1, User Manual x 1
Warning:
- Please only use this charger with the bundled AC adapter
- Please read the instructions below carefully. Especially pay close attention to the recommended
charge settings based on battery type. Failure to do so may cause irreversible damage to the
battery.
- Except for using TN261 in power bank mode, do not leave batteries in the charging slots when
the AC adapter is not connected. Doing so will slowly drain the power of your batteries.
- This product should be stored and used at a clean, dry and ventilated location indoor, with
ambient temperature between 32°F to 104°F,
- Avoid making contact with corrosive materials, and keep it far away from fire / excessive heat.
OPERATING INSTRUCTIONS
Basic Charging:
1. Connect the AC adapter to a wall outlet, then connect its plug to the TN261 charger.
2. After a second, the LCD screen will flash once, and then display “NULL” for both charging slots,
indicating that no battery is present..
3. Insert your NiMH/NiCd/Li-ion rechargeable battery in either or both of the slots, and charging will
begin automatically.
LCD Screen Explanation:
Once charging has
begun, the battery
icon will become
animated to indicate
that charging is in
progress.
The mid section of the screen will toggle between your battery’s
voltage (e.g. 3.75V) and state-of-charge (the percentage of it’s
capacity that has been charged). You can also press the MODE
button to actively switch between the voltage and state-of-charge
display.
At the bottom of the screen,
you can see four available
charge current (500mA /
1000mA /1500mA / 2000mA).
The downward trigangle
indicates the selected current.
battery voltage display
state-of-charge display

Adjusting the Charge Setting:
1. To adjust the charge setting, press and hold the MODE button, until the downward triangle above
the current charge setting starts flashing.
2. Press the MODE button repeatedly to switch between the 4 available charge settings.
CAUTION:
Charging a small battery with a high current can cause permanent, irreversible damage to your
battery, while for low-quality batteries it may even lead to fire hazard.
To ensure safety and the longevity of your batteries, please follow the recommended settings below:
Charge Setting
Suitable Battery Capacity
Example
500mA 1000mAh for Less AAA (NiMH/NiCd),
Rechargeable CR123A (Li-ion)
1000mA 1000 to 3000mAh AA (NiMH/NiCd),
Standard 18650 (Li-ion)
1500mA 3000 to 4000mAh C, D (NiCd),
Large capacity 18650 (Li-ion)
2000mA
4000mAh or above C, D (NiMH),
26650 (Li-ion)
Power Bank Function
TN261 can also be used as a power bank to charge your portable devices when you are on the go.
Step1. Disconnect the AC adapter
from the wall outlet and the
charger.
Insert 1-2 pcs of Li-ion
batteries. (This function is not
compatible with NiMH/NiCd
batteries)
Use a USB cable to connect your
portable device to the USB port
on rear end of the charger. The
charger will then detect the best
output current (between 1.0 and
2.1A), and begin charging your
device automatically.
The LCD screen will display
“USb 5.00V”, which means it is
now in power bank mode.
Note: The charging will stop when either the portable device is fully charged,
or when the batteries’ voltage drops below 3.0V.
Step4
Step2
Step3

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