Cypres voltage

[napaguy99 0]

What should the voltage on a new Cypres be? I couldn't find anything on AirTec's page and there's too much junk to sort through when I ran a search here. Thanks

"Let the misinterpretation and attacks begin."

[PhreeZone 20]

Read the owners manual. It will give you the range of voltages that are still valid.

Yesterday is history
And tomorrow is a mystery

Parachutemanuals.com

[napaguy99 0]

Thanks for the informative response, but I don't have an owners manual. Also, my question is not what are valid voltages, but rather what should a new battery check in at? The reason I am asking is because I just got a repack and I was supposed to get new batteries. I think my rigger may have forgotten to change the batteries. I can't remember exactly what the voltage was on them before I turned it in but it seems like it's pretty close still.

So, what should the voltage be on a new set of Cypres batteries?

"Let the misinterpretation and attacks begin."

[mattjw916 2]

http://www.cypres-usa.com/english_users.pdf

between 5.7 and 6.9...

1.4 Energy supply
CYPRES works with a battery that is calculated to last for approx. two years or approx.
500 jumps. The battery is a high-energy density type, with long life and low self-discharge.
It consists of two round cells, and does not contain heavy metals. Each battery which has
been installed in CYPRES has to be replaced after 2 years at the latest. In case that the
rig or CYPRES will be out of use the battery should be removed and disposed of after 2
years to prevent possible damage. The battery can be replaced by the user, however, the
procedure is tricky and demands considerable attention to detail. See pages 25-29 for full
instructions.
The battery's current voltage is displayed during each activation cycle (see page 18).
After the unit has been switched on, there is a self-test routine during which numbers
beginning with 9999 count down rapidly toward 0. The countdown is interrupted for approx.
three seconds at a value somewhere between 6900 and 5700. This interruption indicates
battery charge. For example, suspension of the countdown at 6300 means that the actual
battery voltage is approx. 6.3 volts.
When the self-test routine is repeated several times within a short interval, the displayed
battery voltage will not be constant. This is normal and has nothing to do with the technical
components of CYPRES but rather, properties of the battery. Typically, the voltage displayed
during a second or third self-test cycle will be lower than the voltage displayed during
initial activation. With further self-test cycles, voltage will rise again.
If the unit has not been used for a long time, the battery voltage shown on the display
during the initial self-test can appear to be rather low. However, the voltage displayed
does not indicate a discharged battery but it is merely due to certain properties of the
battery.
The absence of an electric current over a prolonged period will result in the build-up of an
internal protective layer which will minimize self-discharge.
This layer can be removed by simply switching the unit on and off a couple of times. You
will then see that the battery voltage shown during self-test will rise again.
Battery failure or low battery voltage will be detected by CYPRES. At the end of the selftest
cycle, CYPRES will stop with an error display of 8999 or 8998 and will not assume
operating mode. This indicates that the energy supply of the battery is no longer within
operational limits.
Replace the battery once the self test has stopped at 8998
or 8999 (voltage too low), after two years or after 500 jumps
whichever comes first.

NSCR-2376, SCR-15080

[masterrig 1]

The Cypres power must be replaced every 2-yrs. for the Cypres. Every 4-yrs. for Cypres-2 at the time of the 4-yr. check and the 8-yr. check. New power supply should have been noted on your harness-container packing data card and listed on your bill from your rigger. You might check with your rigger and ask about it.
edited to add: You might contact SSK-Industries for a copy of the Cypres owner's manual.


Chuck

[PhreeZone 20]

Ask your rigger for your old batteries of he did not throw them away.

Yesterday is history
And tomorrow is a mystery

Parachutemanuals.com

[darkwing 5]

Typical new batteries seem to give 6300-6500 during startup. After several cycles, mine, which were new a month ago, have settled at 6360.

-- Jeff
My Skydiving History

[tdog 0]

Quote

Ask your rigger for your old batteries of he did not throw them away.

But there would be no proof that the batteries would have come from this guy's rig...

If you trust the rigger, a quick question, "Say - did you change the batteries?" should be all it takes. If you don't trust his answer - why would you trust his packjob???

That is my two cents.

[Hooknswoop 19]

Cypres batteries have the month and year they were manufactured on them.

New batteries may take a few start-up cycles to show full voltage.

Derek

[tkhayes 348]

IMMMEDIATELY STOP reading the friggin' voltage - worst this that Airtec ever did was to show it to people.

Too many factors affect the battery voltage. temperature, humidity, pretty much everything. It is practically meaningless unless it is completely off the scale. The diagnostics that the system performs will tell you whether or not the system will fire or not.

A car battery is 12 volts. It reads over 12 when it is fresh. It reads 13.8 or 14 when it is charging. It reads 11 or sometimes less when it is -40 degrees C, but it can still start your car.

I find SO MANY PEOPLE sitting there analyziing the battery voltage when they turn on their Cypres. - it is silly.

If it is off the scale, there is a good chance that your Cypres will not power up and will stop with an 8xxx code anyway.

Don't worry about it. Set your calendar to remind you to change in 2 years and watch your logbook for 500 jumps, and change your battery.

TK