Filed under: FAQ by Jeff Servaas |
The BREAK-IN mode ion the MH-C9000 is the perfect way to start your new rechargeable batteries lives. It helps to properly form the chemical structure inside the batteries by charging and discharging them gently, at a fixed charge and discharge rate, which is proportional to the capacity. BREAK-IN mode is also useful for rejuvenating old batteries that have not been used for several months.
Doing a BREAK-IN cycle on the MH-C9000 is a 39 hour process, irrespective of battery capacity. To do a BREAK-IN on your AA or AAA batteries, I recommend you discharge the batteries first. This is not necessary, nor is it mentioned by MAHA in the MH-C9000 user manual, it is just a personal preference. To discharge the batteries, place a battery into the first slot, then use the arrow keys to move the mode to DISCHG. Press the ENTER key, and press ENTER again to use the default discharge rate. Discharge on the first slot will start. Repeat for each slot. If your batteries are fully charged, discharge will take 4-5 hours. Once each slot shows DONE on the LCD next to the slot number, remove all batteries, and wait 5 seconds.
Place the first battery into the first slot. Use the Up and Down arrow keys to select BREAK-IN mode. Use the Up and Down arrow keys to set the battery capacity. Press the ENTER button. Repeat this process for slot 2, 3, and 4.
The charger will charge at 10% of the battery capacity. For 2100mAh IMEDION batteries, the charger will calculate the charge rate as 210mA (0.1C) and charge at that rate for 14 hours. After 14 hours of charging, it will rest the batteries for 2 hours, then discharge at 420mA (0.2C) until it detects the batteries are empty, which will take around 7 hours. It will then rest the batteries again for 2 hours, then charge them again at 0.1C for 14 hours.
At the end of the 39 hours, the battery capacity will be displayed. This mode of the MH-C9000 follows the IEC standard for measuring battery capacity
to measure a battery capacity as per the standards set out by the IEC (International Electrotechnical Commission).
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Just a crazy thought. If you have a new LSD (long self discharge) battery, would it be better to use it first because for sure it would have a charge, rather than discharging it on the charger? Again just another crazy thought.
Comment by Francis — January 7, 2010 @ 6:00 am
Yes, I would recommend using or discharging a LSD battery first, but given the slow rate of charge used in the break-in mode, it is not essential.
Comment by Kel — January 7, 2010 @ 8:24 am