KZR's Bikes of the Month for 2024

change charging voltage

More
22 Jul 2023 10:57 #887494 by wim2584
change charging voltage was created by wim2584
Hello, 
I have a Kawasaki Z440LTD from 1982, and have it complely rebult/clean/painted, I also added a Gel battery, Know this is the topic.
the "normal "charging  voltage is 14,4-14,6 Volt (optimized for a "wet battery" , but to high for a modern Gel lead battery.

to chage this I have placed a bridge rectifier (for example KBCP2510, 25 A max 1000V, cheap on Aliexpress see attachment), the connect the plus to the minus, and the ac to ac, the you get two diodes in conduction and two revese (see drawing), now the regulator is charging at 14.4-14.6 V, then a lost over the diodes of 0,6 V , so the charge Voltage will be 13,8-14,0.

I have build this in my Kawa, the result is a perfect charging Voltage of 13,9-14,1 V (with light on).

hopefully someone help this.
greets Wim

 

Attachment not found

Attachment not found

Attachment not found

Attachment not found

Attachment not found

Attachment not found

Attachment not found

Attachment not found

Attachment not found

Attachment not found

Attachment not found

Attachment not found

Attachment not found

Attachment not found

Attachment not found

Attachment not found


owner of a Kawasaki Z440, 1982.
built from two Kawasaki's 1983 gemany, and a 1982 from Netherlands.
elektrical/electronical engineer, with mechanic as hobby

Please Log in or Create an account to join the conversation.

More
25 Jul 2023 09:41 #887592 by ckahleer
Replied by ckahleer on topic change charging voltage
The diagram says I do not have permission to access page. 

94 KE100
81 CM200t
82 KZ305
85 VF1100c

Please Log in or Create an account to join the conversation.

  • Wookie58
  • Away
  • Moderator
More
25 Jul 2023 10:11 #887593 by Wookie58
The following user(s) said Thank You: wim2584

Please Log in or Create an account to join the conversation.

More
08 Aug 2023 09:42 #888049 by wim2584
Replied by wim2584 on topic change charging voltage
Sorry my mistake, also sorry for late reply, but is was on holiday.
I will this evening try to upload in the correct way

best regrad Wim

owner of a Kawasaki Z440, 1982.
built from two Kawasaki's 1983 gemany, and a 1982 from Netherlands.
elektrical/electronical engineer, with mechanic as hobby

Please Log in or Create an account to join the conversation.

More
08 Aug 2023 11:41 #888056 by wim2584
Replied by wim2584 on topic change charging voltage

Attachment not found

Attachment not found

Attachment not found

Attachment not found

Attachment not found

Attachment not found


owner of a Kawasaki Z440, 1982.
built from two Kawasaki's 1983 gemany, and a 1982 from Netherlands.
elektrical/electronical engineer, with mechanic as hobby

Please Log in or Create an account to join the conversation.

More
08 Aug 2023 12:03 #888057 by wim2584
Replied by wim2584 on topic change charging voltage
for some reasons   again no picture.., I will try a other way.

for extra Info, when you don't like the 0,6 V  voltage drop,  you can also use schottky diode , then the drop will be 0,3 Volt, a good type to use is 20SQ045-3G (max 45V / 20 A)

owner of a Kawasaki Z440, 1982.
built from two Kawasaki's 1983 gemany, and a 1982 from Netherlands.
elektrical/electronical engineer, with mechanic as hobby

Please Log in or Create an account to join the conversation.

More
08 Aug 2023 12:05 #888058 by wim2584
Replied by wim2584 on topic change charging voltage
schematic

owner of a Kawasaki Z440, 1982.
built from two Kawasaki's 1983 gemany, and a 1982 from Netherlands.
elektrical/electronical engineer, with mechanic as hobby

Please Log in or Create an account to join the conversation.

More
08 Aug 2023 12:06 #888059 by wim2584
Replied by wim2584 on topic change charging voltage
bridge rectifier

owner of a Kawasaki Z440, 1982.
built from two Kawasaki's 1983 gemany, and a 1982 from Netherlands.
elektrical/electronical engineer, with mechanic as hobby

Please Log in or Create an account to join the conversation.

More
08 Aug 2023 12:07 #888060 by wim2584
Replied by wim2584 on topic change charging voltage
schematic

 

owner of a Kawasaki Z440, 1982.
built from two Kawasaki's 1983 gemany, and a 1982 from Netherlands.
elektrical/electronical engineer, with mechanic as hobby

Please Log in or Create an account to join the conversation.

More
08 Aug 2023 12:09 #888061 by wim2584
Replied by wim2584 on topic change charging voltage
Now clear how to attach picture:)

the cable I use is the cable form battery/ load, by the start relais, 

owner of a Kawasaki Z440, 1982.
built from two Kawasaki's 1983 gemany, and a 1982 from Netherlands.
elektrical/electronical engineer, with mechanic as hobby
The following user(s) said Thank You: Wookie58

Please Log in or Create an account to join the conversation.

More
08 Aug 2023 18:00 #888072 by ckahleer
Replied by ckahleer on topic change charging voltage
This is good info. My Honda Magna runs at 14.8V. While this is great for around town errand running, it's a bit high for long road trips, which I mainly use this bike for. I may try this rectifier bridge, but add a bypass switch so I can switch between 14.2 and 14.8V.

94 KE100
81 CM200t
82 KZ305
85 VF1100c

Please Log in or Create an account to join the conversation.

Powered by Kunena Forum

If you like KZR Please consider making a donation. Thank you.

KZRider is free, but not without cost.

Please consider chipping in a few bucks to help cover the cost of running the KZR servers.