mrc 969 need help
08-23-2005, 06:02 PM
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mrc 969 need help
ill be honest i dont know anything about lithium batteries...............but i have a 969 and would like to switch to li-po batteries for my plane..............does anyone know if it will work on li-po batteries.................thanks in advance
08-23-2005, 06:45 PM
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RE: mrc 969 need help
The MRC 969, while sold as a lithium charger, does not have the charge termination needed. If you use it to charge Lithium systems you have a 50/50 chance of rather nasty consequences.
There was a product alert posted here earlier, but someone has seen fit to remove it.
I have reposted it here.
RC groups and RC Universe
Product Hazard Alert Oct 03, 2003, 04:53 PM
The MRC Super Brain 696 Pro advertises it is Lithium compatible.
"This powerful charger has an ability to deliver 4.5 amps per channel when
using DC input. Now you can charge two batteries of different voltages or
types simultaneously, or charge one battery while discharging another. For
pro users, the 969 Pro has a variety of settings for optimal charge.
AC/DC delta peak charger with patented MicroPeak Technology
Charges NiCd, NiMH, Li & Pb batteries"
From MRC Super Brain 969 Pro AC/DC Delta Peak Charger with Dual Output and
Discharge Function Instruction Manual.
Model Rectifier Corporation
80 Newfield Avenue
Edison, NJ 08837-3817
732 225-6360
www.modelrectifier.com
B. CHARGING LITHIUM ION-POLYMER BATTERIES
Never leave batteries unattended when charging. Monitor the temperature of
the battery occasionally during the charge cycle. If batteries become hot,
disconnect immediately.
Because of the volatile nature of Lithium batteries, great care must be
taken when charging these cells. If improperly or over charged, the is the
risk that the battery will explode or catch fire. Please follow instructions
and/or recommendations from battery manufacturer when selecting proper
charge rate.
You should always select 5mV peak threshold for all Lithium Ion/Polymer
batteries. You should also start with a fully discharged battery and do a
"capacity" charge as stated above in step 8. However, do not enter a
capacity higher than the rated capacity of the battery or damage may occur.
If you do not begin with a fully discharged battery, then you will have to
estimate the remaining capacity in the battery. We recommend that you use a
charge rate at no higher than half (0.5 times) the rated capacity (example
for 6OOmAH battery the charge rate = 0.5 x 600 or 0.30 amps). Also, be
careful not to discharge the battery too low (3 volts per cell), or damage
to the battery may occur. We recommend that you use a discharge rate no
higher than 0.2 amps.
LITHIUM BATTERIES DO NOT HAVE A PEAK, IF THE CHARGE IS NOT TERMINATED THE
VOLTAGE JUST KEEPS RISING UNTIL THE BATTERY SELF DESTRUCTS IN MANNER THAT
COULD CAUSE A FIRE. IF THE USER DOES NOT CORRECTLY ESTIMATE THE AMOUNT OF
CAPACITY REMAINING IN THE BATTERY AT THE BEGINNING OF CHARGE OR THE CAPACITY
HAS DIMINISHED WITH USE, A SERIOUS AND HAZARDOUS SITUATION WILL EXIST.
Red S.
The Battery Clinic
www.rcbatteryclinic.com
There was a product alert posted here earlier, but someone has seen fit to remove it.
I have reposted it here.
RC groups and RC Universe
Product Hazard Alert Oct 03, 2003, 04:53 PM
The MRC Super Brain 696 Pro advertises it is Lithium compatible.
"This powerful charger has an ability to deliver 4.5 amps per channel when
using DC input. Now you can charge two batteries of different voltages or
types simultaneously, or charge one battery while discharging another. For
pro users, the 969 Pro has a variety of settings for optimal charge.
AC/DC delta peak charger with patented MicroPeak Technology
Charges NiCd, NiMH, Li & Pb batteries"
From MRC Super Brain 969 Pro AC/DC Delta Peak Charger with Dual Output and
Discharge Function Instruction Manual.
Model Rectifier Corporation
80 Newfield Avenue
Edison, NJ 08837-3817
732 225-6360
www.modelrectifier.com
B. CHARGING LITHIUM ION-POLYMER BATTERIES
Never leave batteries unattended when charging. Monitor the temperature of
the battery occasionally during the charge cycle. If batteries become hot,
disconnect immediately.
Because of the volatile nature of Lithium batteries, great care must be
taken when charging these cells. If improperly or over charged, the is the
risk that the battery will explode or catch fire. Please follow instructions
and/or recommendations from battery manufacturer when selecting proper
charge rate.
You should always select 5mV peak threshold for all Lithium Ion/Polymer
batteries. You should also start with a fully discharged battery and do a
"capacity" charge as stated above in step 8. However, do not enter a
capacity higher than the rated capacity of the battery or damage may occur.
If you do not begin with a fully discharged battery, then you will have to
estimate the remaining capacity in the battery. We recommend that you use a
charge rate at no higher than half (0.5 times) the rated capacity (example
for 6OOmAH battery the charge rate = 0.5 x 600 or 0.30 amps). Also, be
careful not to discharge the battery too low (3 volts per cell), or damage
to the battery may occur. We recommend that you use a discharge rate no
higher than 0.2 amps.
LITHIUM BATTERIES DO NOT HAVE A PEAK, IF THE CHARGE IS NOT TERMINATED THE
VOLTAGE JUST KEEPS RISING UNTIL THE BATTERY SELF DESTRUCTS IN MANNER THAT
COULD CAUSE A FIRE. IF THE USER DOES NOT CORRECTLY ESTIMATE THE AMOUNT OF
CAPACITY REMAINING IN THE BATTERY AT THE BEGINNING OF CHARGE OR THE CAPACITY
HAS DIMINISHED WITH USE, A SERIOUS AND HAZARDOUS SITUATION WILL EXIST.
Red S.
The Battery Clinic
www.rcbatteryclinic.com
08-23-2005, 07:21 PM
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RE: mrc 969 need help
huh i appreciate the info..............have u heard if mrc will do anything about it..........that was part of the reason i bought it.............thanks again
