help with LiPo charger
#1
Im new to the LiPo batteries and I bought a Protek prodigy 65 ac charger and a protek 5000mah 2s 35c lipo. I read through the instructions a couple times but still cant figure out whats the best way to charge the battery. I am able to balance charge it but at what amps, how long do I set the safety timer, and the capacity shut off? Also with the storage mode have no idea what to put the settings at
#4
Tech Master
iTrader: (3)
Joined: Jul 2008
Posts: 1,465
From: Melbourne, Australia
Not familiar with your charger
Some will only charge up to storage voltage from empty
Some will only discharge down to storage voltage
Some will either charge or discharge depending on the starting voltage of the pack
If charging up use your normal charge rate
If discharging you will more than likely be limited by the discharge power of your charger, regardless of what rate you enter
Most have very small discharge current rate limits (5 - 30 watts)
Check the spec sheets for your charger and it will tell you what the discharge limit is
Simply divide it by the pack voltage and you will work out the max discharge current
Example
20 watt discharge limit
3s pack
20w / 12.6v = 1.58 amps max discharge current
Cheers
Some will only charge up to storage voltage from empty
Some will only discharge down to storage voltage
Some will either charge or discharge depending on the starting voltage of the pack
If charging up use your normal charge rate
If discharging you will more than likely be limited by the discharge power of your charger, regardless of what rate you enter
Most have very small discharge current rate limits (5 - 30 watts)
Check the spec sheets for your charger and it will tell you what the discharge limit is
Simply divide it by the pack voltage and you will work out the max discharge current
Example
20 watt discharge limit
3s pack
20w / 12.6v = 1.58 amps max discharge current
Cheers
Last edited by crusey_aus; 07-23-2011 at 08:31 PM.
#6
the charger is capable of charging or discharging in storage charge mode depending on the voltage when connected. Here are the specs i got off a main.
Specifications:
Input Voltage: AC 110V-240V, DC 11V-18V
Charge Current: 0.1-5A, 0.1A step
Discharge Current: 0.1-1A, 0.1A step
Power Supply Output: 5A
NiCd/NiMH Cells: 1-15 Cell
LiPo/Li-ion/LiFe Cells: 1-6 Cell
Lead-acid (Pb): 2-20V
Temperature Sensor Port: Yes
USB Port: Yes
Balance: 2-6 Lithium Cells
Case: aluminum
Display: 16x2 character LCD
Dimension: 135x125x34mm
the instructions dont give much info.
Specifications:
Input Voltage: AC 110V-240V, DC 11V-18V
Charge Current: 0.1-5A, 0.1A step
Discharge Current: 0.1-1A, 0.1A step
Power Supply Output: 5A
NiCd/NiMH Cells: 1-15 Cell
LiPo/Li-ion/LiFe Cells: 1-6 Cell
Lead-acid (Pb): 2-20V
Temperature Sensor Port: Yes
USB Port: Yes
Balance: 2-6 Lithium Cells
Case: aluminum
Display: 16x2 character LCD
Dimension: 135x125x34mm
the instructions dont give much info.
#7
Tech Master
iTrader: (3)
Joined: Jul 2008
Posts: 1,465
From: Melbourne, Australia
If it has a discharge limit of 1 amp then use that
A 1 amp discharge of a 5000mah sized pack will take 150 minutes to take it down from full to storage voltage
A lot easier to run the pack in your car down to your LVC cuts in
Throw it back on the charger and charge it at 5 amps before storing
Charging at 5 amps will take 30 mins from empty to get to storage voltage
Cheers
A 1 amp discharge of a 5000mah sized pack will take 150 minutes to take it down from full to storage voltage
A lot easier to run the pack in your car down to your LVC cuts in
Throw it back on the charger and charge it at 5 amps before storing
Charging at 5 amps will take 30 mins from empty to get to storage voltage
Cheers
#8
Joined: Jul 2008
Posts: 11,530
From: Houston, TX
Im new to the LiPo batteries and I bought a Protek prodigy 65 ac charger and a protek 5000mah 2s 35c lipo. I read through the instructions a couple times but still cant figure out whats the best way to charge the battery. I am able to balance charge it but at what amps, how long do I set the safety timer, and the capacity shut off? Also with the storage mode have no idea what to put the settings at
Pg 19 of your manual says this charger is set to discharge or charge a lipo to storage conditions as dictated by the voltage when you connect it.
Due to limited discharge wattage (5watts), it will be faster to take care of any needed discharging in your RC unless the voltage is pretty close to storage value. I make sure mine are charged to storage since that's faster.




