Rechargeable or not rechargeable?

MarkP · 06-15-2022, 05:05 AM

Recently I bought used Pentax K-500 camera. The date and time disappears after battery change. At eBay there is a compatible(???) battery SEIKO MS621FE FL11E

There was said it is rechargeable. How can it to be charged? Replacing it is outside my skills and having done at a service it is too expensive, costs more than the buying price. If it can not be recharged, I have time to set the date and time every single battery change. But if someone knows way to solve the problem, I am gratefully.

**StigVidar** · 06-15-2022, 05:14 AM

Replacing it require special skills so if you dont have it, forget it.

It charges when the camera is turned on, but it has to be turned on continously for days to charge from 0 to 100%. It will eventually charge if you use your camera. If it stays unused, it will discharge.

---------- Post added 15-06-22 at 14:21 ----------

Tutorial: Change Back-up Battery Pentax K-30, K-50, K-500 - PentaxForums.com

**UncleVanya** · 06-15-2022, 06:05 AM

Some people have had luck rejuvenating the back up batteries but I can’t recall the method. Maybe someone who recalls can add that info to help you.

Wheatfield · 06-16-2022, 07:43 AM

Originally posted by UncleVanya

Some people have had luck rejuvenating the back up batteries but I can’t recall the method. Maybe someone who recalls can add that info to help you.

I tried on my old K3. Unfortunately, it had sat with no main battery for several years and the now dead internal battery would not take a charge.
Word to the wise: don't let these cameras sit for any length of time with no main battery in the compartment and make sure the battery is taken out and charged every few months if the camera is going to sit.

reh321 · 06-17-2022, 11:12 AM

Originally posted by Wheatfield

I tried on my old K3. Unfortunately, it had sat with no main battery for several years and the now dead internal battery would not take a charge.
Word to the wise: don't let these cameras sit for any length of time with no main battery in the compartment and make sure the battery is taken out and charged every few months if the camera is going to sit.

How long did you leave a newly charged battery in it to ‘recharge the internals’?

06-15-2022, 05:05 AM	#1
MarkP Guest	Rechargeable or not rechargeable? Recently I bought used Pentax K-500 camera. The date and time disappears after battery change. At eBay there is a compatible(???) battery SEIKO MS621FE FL11E There was said it is rechargeable. How can it to be charged? Replacing it is outside my skills and having done at a service it is too expensive, costs more than the buying price. If it can not be recharged, I have time to set the date and time every single battery change. But if someone knows way to solve the problem, I am gratefully.

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06-15-2022, 05:14 AM	#2
StigVidar Site Supporter Join Date: Nov 2006 Location: Norway Photos: Gallery \| Albums Posts: 705	Replacing it require special skills so if you dont have it, forget it. It charges when the camera is turned on, but it has to be turned on continously for days to charge from 0 to 100%. It will eventually charge if you use your camera. If it stays unused, it will discharge. ---------- Post added 15-06-22 at 14:21 ---------- Tutorial: Change Back-up Battery Pentax K-30, K-50, K-500 - PentaxForums.com

06-15-2022, 06:05 AM	#3
UncleVanya Loyal Site Supporter Join Date: Jul 2014 Photos: Gallery \| Albums Posts: 28,459	Some people have had luck rejuvenating the back up batteries but I can’t recall the method. Maybe someone who recalls can add that info to help you.

06-16-2022, 07:43 AM	#4
Wheatfield Moderator Join Date: Apr 2008 Location: The wheatfields of Canada Posts: 15,987	Originally posted by UncleVanya Some people have had luck rejuvenating the back up batteries but I can’t recall the method. Maybe someone who recalls can add that info to help you. I tried on my old K3. Unfortunately, it had sat with no main battery for several years and the now dead internal battery would not take a charge. Word to the wise: don't let these cameras sit for any length of time with no main battery in the compartment and make sure the battery is taken out and charged every few months if the camera is going to sit.

06-17-2022, 11:12 AM	#5
reh321 Pentaxian Join Date: Nov 2014 Location: South Bend, IN, USA Photos: Gallery \| Albums Posts: 23,185	Originally posted by Wheatfield I tried on my old K3. Unfortunately, it had sat with no main battery for several years and the now dead internal battery would not take a charge. Word to the wise: don't let these cameras sit for any length of time with no main battery in the compartment and make sure the battery is taken out and charged every few months if the camera is going to sit. How long did you leave a newly charged battery in it to ‘recharge the internals’?