I have two Ping 48v 20ah batteries I want to connect in parallel on my bike with a front Crystalyte Phoenix brute motor. I am way too short for my weight on the chart so I need lots of powr to ride the 20 mile RT to work each day.
Ping said I should use two diodes on the setup and he provided them at a good price. So I wired the batteries and diodes as shown in the diagram on Ping's website. As I understand, using the diodes keeps the two batteries from trying to constantally balance themselves.
I went for a short ride about 5 miles and then put the batteries on the chargers. Here is where my questions start...one battery had all the LEDs (except one) come on rather quickly. The other battery took much longer so I'm wondering...it seems to me that one battery might have done all the work but I think the current draw should have come from both batteries equally. Am I wrong in this assumption?
Both diode cases did get very warm so curiosity got the best of me and I opened one of the diode cases up. There were two three leg components in the box which looked more like some type of transistor to me. The middle leg of each component were common together and the outside legs of each component were commoned together. It didn't look like any diode I have ever seen before.
Next, when the charging was complete both batteries measured exactly the same voltage. I measured at the charger plug after i disconnect the charger. This morning each battery was 60 volts on the dot. That seemed very strange to me. I left the bike at home and drove the car to work. When I got home I measured the voltage on each battery at the charger plug and both of them still measured the equally exactly, 57.4 volts...
I'm going to ride the bike again on Thursday and see if it appears one battery is doing all the work by watching to see if the same battery balances much faster than the other battery.
On the 5 mile ride last night the CA showed the Vmin at 49.2 and the Amax at 60. It is somewhat hilly around here and when I gave it full throttle I would generally see amps in the 20 amp range...sometimes 24 to 28 amps. The motor housing was warm to the touch after the 5 mile ride.
This is a new setup for me and I really want to exercise both batteries equally. I'm abut 330lbs and it's going to be a hard life for the bike and motor system. I want to do this right...
I am thinking about emailing Ping to ask but i hate to bother him about such a small setup question. I am really curious about the diode things...
Thanks
Ping said I should use two diodes on the setup and he provided them at a good price. So I wired the batteries and diodes as shown in the diagram on Ping's website. As I understand, using the diodes keeps the two batteries from trying to constantally balance themselves.
I went for a short ride about 5 miles and then put the batteries on the chargers. Here is where my questions start...one battery had all the LEDs (except one) come on rather quickly. The other battery took much longer so I'm wondering...it seems to me that one battery might have done all the work but I think the current draw should have come from both batteries equally. Am I wrong in this assumption?
Both diode cases did get very warm so curiosity got the best of me and I opened one of the diode cases up. There were two three leg components in the box which looked more like some type of transistor to me. The middle leg of each component were common together and the outside legs of each component were commoned together. It didn't look like any diode I have ever seen before.
Next, when the charging was complete both batteries measured exactly the same voltage. I measured at the charger plug after i disconnect the charger. This morning each battery was 60 volts on the dot. That seemed very strange to me. I left the bike at home and drove the car to work. When I got home I measured the voltage on each battery at the charger plug and both of them still measured the equally exactly, 57.4 volts...
I'm going to ride the bike again on Thursday and see if it appears one battery is doing all the work by watching to see if the same battery balances much faster than the other battery.
On the 5 mile ride last night the CA showed the Vmin at 49.2 and the Amax at 60. It is somewhat hilly around here and when I gave it full throttle I would generally see amps in the 20 amp range...sometimes 24 to 28 amps. The motor housing was warm to the touch after the 5 mile ride.
This is a new setup for me and I really want to exercise both batteries equally. I'm abut 330lbs and it's going to be a hard life for the bike and motor system. I want to do this right...
I am thinking about emailing Ping to ask but i hate to bother him about such a small setup question. I am really curious about the diode things...
Thanks