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12-08-2009, 08:22 AM
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#1
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Respect your elvers
Join Date: Mar 2004
Location: franklin ma
Posts: 3,368
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Stupid battery question
I have a malfunctioning monitoring device at work that requires a 3.7 volt lithium battery. I am not sure yet whether the battery is bad or the device is bad....here's the question... 
I tested out the device with a regular 1.5 volt battery and nothing happened...does this device actually need a 3.7 volt battery to operate or is the bigger battery needed simply for longer life? |
It's not the bait
At the end of your line
It's the fishing hole
Where all the fish is blind
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12-08-2009, 08:41 AM
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#2
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...
Join Date: Jan 2004
Location: MA/RI
Posts: 2,411
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Test voltage level on the 3.7 volt battery
Posted from my iPhone/Mobile device
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12-08-2009, 08:45 AM
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#3
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Respect your elvers
Join Date: Mar 2004
Location: franklin ma
Posts: 3,368
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Quote:
Originally Posted by Redsoxticket
Test voltage level on the 3.7 volt battery
Posted from my iPhone/Mobile device
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Are you saying the device likely needs 3.7 volts just to turn on? If so, that answers my question. |
It's not the bait
At the end of your line
It's the fishing hole
Where all the fish is blind
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12-08-2009, 08:56 AM
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#4
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BuzzLuck
Join Date: Feb 2009
Location: Brockton
Posts: 6,414
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Quote:
Originally Posted by Back Beach
Are you saying the device likely needs 3.7 volts just to turn on? If so, that answers my question.
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Likely needs the full voltage.....or closer than 1.5V you tried. |
 Given the diversity of the human species, there is no “normal” human genome sequence. We are all mutants.
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12-08-2009, 09:26 AM
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#5
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Respect your elvers
Join Date: Mar 2004
Location: franklin ma
Posts: 3,368
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Quote:
Originally Posted by PRBuzz
Likely needs the full voltage.....or closer than 1.5V you tried.
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I'm "shocked" by your response, but I'll try it...  |
It's not the bait
At the end of your line
It's the fishing hole
Where all the fish is blind
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12-08-2009, 11:28 AM
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#6
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Super Moderator
Join Date: Sep 2003
Location: Georgetown MA
Posts: 18,203
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Usually rated +/- 5% on voltage.....not +/-60%....you need to be pretty close on the voltage to turn on.
if you are going to use a "Different" battery source make sure you are on or below in amps...or you risk frying it
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"If you're arguing with an idiot, make sure he isn't doing the same thing."
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12-08-2009, 02:12 PM
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#7
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........
Join Date: Apr 2002
Posts: 22,805
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yes ........... needs the higher voltage  |
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12-08-2009, 03:24 PM
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#8
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Respect your elvers
Join Date: Mar 2004
Location: franklin ma
Posts: 3,368
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3.7 volt AA batteries are tough to find, let me tell you.
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It's not the bait
At the end of your line
It's the fishing hole
Where all the fish is blind
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12-08-2009, 04:04 PM
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#9
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...
Join Date: Jan 2004
Location: MA/RI
Posts: 2,411
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The current will increase in the electronics if the replacement battery is higher then 3.7 volts.
I would not be as concerned if the replacement battery max. current is higher then that of the original battery knowing the following:
I = V/R
and since R(resistance) and V(voltage) are a fixed value the I (curremt) will be the same regardless of the max battery current is greater then the original.
If you get a battery that has a current ""very much below"" the original the device will not worK
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