CP-E4 part list ?

Does anyone know the CP-E4 part list or part number for the circuit board ?

Can I just order that part to replace the circuit inside the battery pack ?

What happened?

My friend try to replaced 12 volt external (Lead acid battery) to the pack instead of 8 AA ....he modified the pack by drill the hole to it and wire it to the battery terminal ....the result is he burn the circuit board , because he look at the pack out side lable it said 12V ...so he goes with 12V .The total volt for 8AA about 9.6 volt ....it's too late to find out .

I had to call Canon tomorrow to check out see if they can let me just buy that circuit board to replace .

The CP-E4 should work fine with 8 standard AA batteries, 12V, as well as the 9.6V from NiMH batteries. I suspect something else went wrong, an error or maybe even just too much current.

I just called Canon and asked for the part last time I needed something.

tim wrote in post #5773620
The CP-E4 should work fine with 8 standard AA batteries, 12V, as well as the 9.6V from NiMH batteries. I suspect something else went wrong, an error or maybe even just too much current.

I just called Canon and asked for the part last time I needed something.

You are right ....he had 5 amp draw for the battery pack ...I think it's too much current for the circuit handle .

I just talk to him on the phone ,he had some one check the circuit and fixed it already .

I'll be interested to hear the results

QX56 wrote in post #5773894
You are right ....he had 5 amp draw for the battery pack ...I think it's too much current for the circuit handle .

I just talk to him on the phone ,he had some one check the circuit and fixed it already .

So he got the cp-e4 working withe SLA battery or fixed the circuit for the AAs

I wonder if he may have had the connection polarity of the 12v battery reversed which may have done something. That might account for the 5 amps of current draw.

pendulum15 wrote in post #5775337
So he got the cp-e4 working withe SLA battery or fixed the circuit for the AAs

Now he had 9-10 Volt SLA work with the CP-E4 , he not using the AA .Because you know that if you had 1 out of 8 AA weak or dead , your CP-E4 is waste useless and slow .

He told me that he had the flash cycle too fast ,instantly and he try about 10 shot ....then it die .So now he try SLA just about 3.5 amp ...and it work perfect .

Please get him to post a tutorial soon, so we can all mod out cp-e4

pendulum15 wrote in post #5780077
Please get him to post a tutorial soon, so we can all mod out cp-e4

I will have him take the photo and the instruction then I'll post it here

Just a thought why not try powering with li-ion batteries

http://www.a123racing.​com

these can supply a continuous current of 69A (!)
and charge in 15min (!)
and you can get 9.9V with almost no voltage sag

downside... pricey

could best a quantum though....

hmmm i am very interested in hearing about this...

Me too, got me started on a whole train of thought... use the canon HV inverter with any battery you please...

Here is couple photo how new SLA attach and wire to CP-E4 , make sure you do not use over 9.6 volt input to the pack . You can have between 8-9 volt input .But do not use 10 volt

Right now my friend he used 8 volt input and 3.5 amp supply to CP-E4 .This SLA should be good enough here : http://www.batterymart​.com/p-sla-ps-832.html

Or here : http://www.atbatt.com/​product/3551.asp

1.When you loose al the screw , there is 1 small latches hidden inside your pack ,you can use flat tip screw drive to unlatch or lift up the tap to open complete the case :