SunFounder 250+, Manual

2/9/2018

SunFounder 250+Radiolink T8FB Remote Controller(Assembled) - Wiki

http://wiki.sunfounder.cc/index.php?title=SunFounder_250%2BRadiolink_T8FB_Remote_Controller(Assembled)

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2. If the charging indicator does not light up after you connect the battery to charger, please check the connection, and
whether the battery’s voltage is too low (<1.5V/CELL); If a cell is lower than 3V, the charger will provide low current
recovery charging for 3 minutes; if it fails, the charging indicator will blink 0.5 seconds, indicating the battery is damaged.
Only when each of all the cells reaches 3V, it will turn to normal charging. The charging indicator will light up green when
the battery is fully charged. Please take out the battery in time to avoid battery deformation or even explosion caused by
overcharging. 
3. The battery may fail to be charged because of over discharging, thus remember to mount a battery indicator alarm. When
an alarm beeping is heard, please take out the battery to charge in time! You can try to recover the damaged battery if you
have a stabilizator. Here’s how to do:  
1) Adjust the output voltage to 12.6V as shown in Figure 1-5;

Figure 1-5 

2) Connect the anode and cathode of the stabilizator directely, and adjust the current to 1A (Figure 1-6);