KAVAN C20 Duo - Instruction manual

Introduction

Congratulations on purchasing the KAVAN C20 Duo dual-channel balance charger/discharger. This unit is simple to use; however, the proper operation of this charger, as well as the correct usage of your batteries, requires some knowledge on the part of the user. Therefore, it is important to read right through the Operating instructions and Warning and safety notes before you attempt to use your new charger for the first time.

Charger set contents

KAVAN C20 Duo AC/DC 200W Charger, AC power cable (EU plug), Instruction manual

Charger layout

File:Charger layout C20 duo en.png

Roller wheel

Short Press: Enter task settings/Confirm current settings/Start charging/Stop charging/Clear Warning messages.

Long Press: Enter System setting/Terminate current task/Start charging/Stop charging.

Scroll Up and Down: Select the required menu/Adjust parameter value.

CH/EXIT button

Short press: Switch the channel/Exit the settings

Long press: Stop charging/Clear warning messages

Warnings and safety notes

• Do not leave the charger unattended while charging. If any malfunction occurs, TERMINATE THE PROCESS AT ONCE and refer to the operation manual.
• Disconnect the battery if it becomes hot immediately. Allow the battery to cool down before reconnecting.
• Do NOT attempt to charge incompatible types of rechargeable batteries or even dry (alkaline, zinc-carbon) batteries. This charger is designed to only charge and discharge Nickel-Cadmium, Nickel-Metal Hydride, Lithium-Ion, Lithium-Polymer (regular and HV), LiFePO4, and Lead-Acid batteries.
• Never attempt to charge or discharge the following types of batteries.
• A battery pack which consists of different types of cells (including different manufacturers).
• Non-rechargeable batteries (Explosion hazard).
• Batteries that require a different charge technique from NiCd, NiMH, LiPo, LiHV or Pb.
• A faulty or damaged battery.
• A battery fitted with an integral charge circuit or a protection circuit.
• Batteries installed in a device or which are electrically linked to other components.
• Batteries that are not expressly stated by the manufacturer to be suitable for the currents the charger delivers during the charge process.
• Keep the charger well away from dust, damp, rain, heat, direct sunshine and vibration. Never drop it.
• Do not allow foreign objects into the charger.
• The allowable AC input voltage is 100-240 V/50-60 Hz or 11-18 V DC voltage. DO NOT try to feed the charger simultaneously using the AC and DC input.
• This charger and the battery should be put on a firm level, heat-resistant, non-flammable and nonconductive surface. Never place them on a car seat, carpet or similar.
• Keep all the inflammable volatile materials away from operating area.
• Do not cover the air intake holes on the charger, as this could cause the charger to overheat.
• Make sure you know the specifications of the battery to be charged or discharged to ensure it meets the requirements of this charger. If the program is set up incorrectly, the battery and charger may be damaged. It can cause fire or explosion due to overcharging.
• Do not attempt to charge batteries at excessive fast charge currents. Check with your battery manufacturer for the maximum charge rate applicable to your battery.
• Do not use automotive type battery chargers to power the charger.
• Do not disassemble the charger.
• This appliance is not intended for use by young children or uninformed persons unless they were adequately supervised by a responsible adult person to ensure that they can use the appliance safely.

Specification

AC input voltage	100-240 V/50-60 Hz
DC input voltage	11–18 V
Battery types/cells	1–6 cell LiPo/LiIon/LiFe, LiHV
Charge current	0.1–10.0 A
Charge wattage	DC: 2x 100W / AC: CH1+CH2 max. 100W (adjustable power distribution 100:0–50:50–0:100 W)
Discharge current	0.1–5.0 A
Discharge wattage	2× 10 W
Balance current	500 mA/cell
PC link	Micro-USB port for firmware update
Dimensions	135×105×58 mm
Weight	550 g

Confirming the charging current

Make sure to know the maximum charging current of the battery before charging, never use excessive current to charge to damage your battery, which will result in over heat even explosion during the charging process. The charging and discharging rate of battery is usually marked with C value. Multiplying the charging C value and battery capacity equals to the maximum charging current supported by the battery. For example, for a 5000 mAh battery with a charging rate of 1C, the maximum charging current would be 5000*1= 5000 mA; therefore, the maximum charging current is 5A.

For a lithium battery, if it is impossible to confirm the supported charging C value, please set the charging current below 1C, for the sake of its (lithium battery) safety (the same applies to NiMH/NiCd batteries; no more than 0.1C for Pb batteries).

Battery standard parameters

	LiPo	Lilon	LiFe	LiHV	NiCd	NiMH	Pb
Nominal voltage	3.7 V/cell	3.6 V/cell	3.3 V/cell	3.7 V/cell	1.2 V/cell	1.2 V/cell	2.0 V/cell
Max. charge voltage	4.2 V/cell	4.1 V/cell	3.6 V/cell	4.35 V/cell	1.5 V/cell	1.5 V/cell	Type specific*
Storage voltage	3.8 V/cell	3.7 V/cell	3.3 V/cell	3.9 V/ cell	Store fully discharged	Store fully charged	Store fully charged
Min. discharge voltage	3.0 V/cell	3.0 V/cell	2.8 V/cell	3.1 V/ cell	0.8 V/cell	1.0 V/cell	1.8 V/cell
Max. charge current	≤1C or more**	≤1C	≤4–5C (A123)	≤1C	1–2C	1–2C	≤0.4C

*) Sealed (gas tight) gel PB batteries up to 2.27–2.30 V/cell. Classic lead-acid ("car battery") and valve-regulated lead-acid batteries up to 2.46 V/cell.

**) Some LiPo batteries may be charged at 5C or even higher rate – always follow the battery manufacturer’s recommendation.

Task settings

Power on the charger and connect a battery; the charger will enter into the standby page. Short press the roller wheel to activate the program setting menu Program setting menu. The items in this menu are as follows: