User manual NOVAK RHINO DIGITAL PEAK-DETECTION CHARGER

[. . . ] False peaks can occur, and excessive voltage spikes can damage the charger. · Do not obstruct or cover the fan grill on the top of the charger, as this will cause it to overheat and shut down. · Do not charge battery packs with less than 4 or more than 8 cells connected in series. · Nickel-cadmium batteries can be damaged if the charging current used is too high. [. . . ] A good way to reduce the problem of some cells having a more complete charge than others, is to repeak the battery pack after about 30 minutes. This allows the cells that have over-charged to discharge down to the level of the remaining cells in the pack. Repeaking after the cells have equalized with each other brings all the cells up together for maximum capacity. It is best to time this process so that you are able to run immediately after repeaking, this will minimize the 'self-discharging' of the batteries. DISCHARGE FOR EXTENDED RUN TIME AND LONG LIFE When you are done for the day, you should fully discharge your battery packs to prepare them for the next time you use them. Storing and then recharging a partially charged battery pack will result in decreased performance from your batteries, and will also reduce the number of effective charge cycles you will get from your batteries. The simplest method to discharge your batteries is to put a 30 ohm/10 watt resistor across the battery terminals as shown below. As the pack discharges, some of the cells will become reversed (the cell voltage becomes negative) and will charge backwards. However, the current drawn through a 30 ohm resistor is low enough for the cell to tolerate without damage. Connect the resistor to the battery until the resistor cools to room temperature. Damage to the battery pack can also occur if the resistor remains attached to the pack for a time period longer than 24 hours. Discharging Battery Pack 30 / 10W Resistor TROUBLE-SHOOTING GUIDE This section describes typical charger problems, causes, and solutions. If you are unable to solve the problem, call our Customer Service Department for assistance. Charger Stops Before Battery Pack Is Fully Charged · Input power supply is unstable. Connect the charger input to a 12 volt DC automobile battery to check. If the voltage starts to drop before the charger shuts off, the charger is operating normally. If charging current is too high for the battery pack, it will heat up prematurely and cause the voltage to drop, shutting off the charger. · The charging current was lowered while charging after the lockout time expired. (See Below) Charger Stops And Will Not Restart Thermal Shut-Down has occurred · Air filter clogged or something blocking fan grill. · Charger input voltage too high or charge current set too high. Reduce input voltage to 1. 5 volts DC above the peak-voltage of the battery pack being charged or reduce charging current. This more commonly happens when charging 4 cell packs at too high of a current. [. . . ] When the charger is charging the fan will run, and when the Rhino comes to a stop the fan will also stop. The fan will stop at the completion of charge, or whenever you interrupt the charge cycle. When you can no longer hear the Rhino's fan running you know that your battery pack has finished charging. Insert screwdriver into the two slots at back edge of grill and gently pry plastic forward while lifting grill upward at the same time. [. . . ]