Use the buttons to make selections. NOTE: It is normal for the batteries to become hot during charging and discharging. It is also normal for a faint noise to emanate from the charger during operation. If no batteries are inserted during the startup, the charger will go into standby mode with the screen turned off. If no button is pressed within 10 seconds, the charger will proceed to the last used setting. If more than one battery is inserted at a time without the button pressed , the charger will prompt for programming in the order in which the batteries were inserted.
The data will be stored as long as the battery is inserted in the charger. It will be lost upon removal of the battery. The charger will display the accumulated energy that is put into the battery, NOT the Available Capacity of the battery. The charger will display the Available Capacity of the battery. The charger will display the accumulated energy that is removed from the battery, NOT the Available Capacity of the battery.
The charger will display the available capacity of the battery. Typically, alkaline and extremely aged batteries will fail this test. Previous version served me very well for 13 Years! Rating Required Select Rating 1 star worst 2 stars 3 stars average 4 stars 5 stars best. Review Subject Required. Comments Required. Current Stock:. Quantity: Decrease Quantity: Increase Quantity:.
It should be used on batteries known to be in good condition and have been in continuous use. Battery not recharged at the end of the cycle. The increased total charging capacity compensates for energy lost as heat. I am charging some older batteries and see that the charging capacity is much higher than the capacity I programmed. The charger terminates by voltage and by temperature simultaneously.
For certain older and low quality batteries, they do not produce the proper negative delta V signal a small voltage drop at the conclusion of the charge needed for the charger to stop.
At the same time, the battery temperature failed to reach the termination limit as the charging rate was probably too low. You should also use a higher charging rate. When using higher charging current, the charging capacity seems to reduce.
Is this normal? When charging at higher current, the charge completeness reduces thereby lowering the charging capacity. This is to prevent battery overheating. This typically occurs at a rate greater than mA. Generally speaking, mA achieves nearly full charge completeness for AA batteries. Even after the charge ends DONE appears on screen , the charger will apply a topoff charge and continuous maintenance charge. Despite that the capacity on the screen no longer increases, the batteries are being topped off.
If you would like to achieve better charge completeness at higher currents, a small fan can be added to cool the batteries externally. Why is it not recommended to charge battery below 0. When charging below 0. Although the temperature sensors will safeguard battery overheating, lower charging rate might not cause enough heating in the batteries to trip the sensors. Charging in that mode is terminated by only time 1. During this time, a high current is applied and voltage measured to determine the impedance of the battery.
I thought the charger is supposed to be precise. The charging and discharging current are pulsed, thereby causing the displayed current to go up and down. This unit has saved me a ton on money over the years. It keeps my batteries running at peak performance. This far out performs your average box store off the shelf charger. Simply the best. Once I know a battery is good, I just pop it in and let the automatic function do it. Really easy to use with confidence.
And yes, most of my review is more or less a cliche I have only had my PowerEx MH-C charger-analyzer now for just about two weeks, but it has been running constantly since it arrived.
For a small flashlight, that is of absolutely no concern whatsoever. I must say that this charger does have a learning curve, but it is small, overall; and there are enough reviews of this charger-analyzer out there on the net and on YouTube the learning curve is pretty shallow overall. One thing the directions did not make perfectly clear but the reviews out there did is that you have the ability to charge only one, or two, or three or four batteries at a time.
Every slot in this charger is independent of others around it. This is the nicest, most comprehensive and most flexible battery charger I have ever used in over 25 years of using rechargeable batteries.
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