D-LI109 battery on D-BC90 charger

phat_bog · 12-08-2021, 04:28 PM

bonjour!
suppose you're travelling with 2 cameras, one taking D-li90 batteries the other one D-li109 batteries.
While checking voltages and specs of their dedicated chargers D-BC90 & D-BC109, well, i realised i can theoretically charge D-li109 batteries on the D-BC90 charger, which means i can travel with one charger only for both batteries and cameras.
I found d-li109 charging very well on D-BC90.
Any thoughts?

bertwert · 12-08-2021, 04:36 PM - **1 Like**

Well, they both output 8.4V at 400mA so no problems there. D-LI109 seems to squeeze onto the D-BC90 well enough as well - though vice versa is not possible.

The only difference that may matter is the D-BC109 has a fourth "D" contact that the D-BC90 does not - I'm not sure exactly what it does, but as I understand it third party chargers don't have it either, so I guess it's probably not going to go up in flames.

Interesting observation, I never would have thought to try this and could be useful in a pinch!

shyrsio · 12-08-2021, 05:25 PM

But how do you get the battery to stay put? the D-LI109 has some sort of hooks to keep the battery in place, the D-BC90 does not provide those.

**mikesbike** · 12-08-2021, 05:27 PM

Since the contacts are different, I just carry both types with me when traveling. And sometimes I find myself charging both types of batteries simultaneously. I've not tried the fitting, but the slots to accommodate the batteries into each charger look to be of different sizes. But if one works for both, taking just one could save a bit of space. Fortunately, the FF K-1 and K-1II use the same battery as do the flagship APS-C bodies, so both are served with the same charger and thus the batteries are interchangeable.

**ramseybuckeye** · 12-08-2021, 05:41 PM - **1 Like**

Originally posted by phat_bog

bonjour!
suppose you're travelling with 2 cameras, one taking D-li90 batteries the other one D-li109 batteries.
While checking voltages and specs of their dedicated chargers D-BC90 & D-BC109, well, i realised i can theoretically charge D-li109 batteries on the D-BC90 charger, which means i can travel with one charger only for both batteries and cameras.
I found d-li109 charging very well on D-BC90.
Any thoughts?

I'm surprised that Pentax hasn't developed a convertible charger, it would sure save them money. But then aren't they going to in camera charging now?

phat_bog · 12-08-2021, 07:06 PM

Originally posted by shyrsio

But how do you get the battery to stay put? the D-LI109 has some sort of hooks to keep the battery in place, the D-BC90 does not provide those.

Well, this is where the magic happens, if you push the Dli109 in the DBC90 charger with just a little punch it fits perfectly.
I finished charging 2 Dli109s they seem in perfectly good shape. And the green dot appears on charge then stops when charge is done.

---------- Post added 12-08-21 at 07:13 PM ----------

Originally posted by bertwert

Well, they both output 8.4V at 400mA so no problems there. D-LI109 seems to squeeze onto the D-BC90 well enough as well - though vice versa is not possible.

The only difference that may matter is the D-BC109 has a fourth "D" contact that the D-BC90 does not - I'm not sure exactly what it does, but as I understand it third party chargers don't have it either, so I guess it's probably not going to go up in flames.

Interesting observation, I never would have thought to try this and could be useful in a pinch!

I'll post an update after 3 complete cycles with Dli109s on the same Dbc90 charger , just to see if the combo stands in time.

Not a Number · 12-08-2021, 08:58 PM

If the output specifications are the same then maybe it is ok.

I thought the extra contact had something to do with charge/overcharge/heat detection. Which is why some of the 3rd party batteries don't last as long.

**photogem** · 12-08-2021, 11:11 PM

Originally posted by phat_bog

Well, this is where the magic happens, if you push the DLI109 in the DBC90 charger with just a little punch it fits perfectly.
I finished charging 2 Dli109s they seem in perfectly good shape. And the green dot appears on charge then stops when charge is done.

It is 100% o.k. just that you don't have the 4th contact on the D-BC90 which the D-BC109 has. The new charger has those 4 contacts because of a law in Japan,
but it works without any risk!

I have done it many times when once in holidays having a K5IIs and a K-S1 with me and I forgot the D-BC109.

Paul the Sunman · 12-09-2021, 01:01 AM

Originally posted by ramseybuckeye

I'm surprised that Pentax hasn't developed a convertible charger, it would sure save them money. But then aren't they going to in camera charging now?

The K3iii doesn't even come with an external charger!

Lev · 12-09-2021, 02:41 AM

kinda offtopic sorry to OP but does anybody know good, multi charger for d-li90 batteries with discharge indicator?

**photogem** · 12-09-2021, 06:41 AM

Hi to Tiflis:
Don't use any multichargers nor 3-rd party chargers.
battery question - Page 4 - PentaxForums.com
Pentax D-BC90 Battery Charger (for D-LI90 batteries) reviews - Pentax Camera Accessory Review Database

Lev · 12-09-2021, 08:46 AM

Originally posted by photogem

Hi to Tiflis:
Don't use any multichargers nor 3-rd party chargers.
battery question - Page 4 - PentaxForums.com
Pentax D-BC90 Battery Charger (for D-LI90 batteries) reviews - Pentax Camera Accessory Review Database

thanks!! so sad Pentax does not offer multi chargers :/

shyrsio · 12-10-2021, 03:43 AM

Originally posted by phat_bog

Well, this is where the magic happens, if you push the Dli109 in the DBC90 charger with just a little punch it fits perfectly.
I finished charging 2 Dli109s they seem in perfectly good shape. And the green dot appears on charge then stops when charge is done.

---------- Post added 12-08-21 at 07:13 PM ----------

I'll post an update after 3 complete cycles with Dli109s on the same Dbc90 charger , just to see if the combo stands in time.

thank you for this!, this will sure make packing easier with two bodies.

12-08-2021, 04:28 PM	#1
phat_bog Senior Member Join Date: Jun 2016 Location: Paris Posts: 124	D-LI109 battery on D-BC90 charger bonjour! suppose you're travelling with 2 cameras, one taking D-li90 batteries the other one D-li109 batteries. While checking voltages and specs of their dedicated chargers D-BC90 & D-BC109, well, i realised i can theoretically charge D-li109 batteries on the D-BC90 charger, which means i can travel with one charger only for both batteries and cameras. I found d-li109 charging very well on D-BC90. Any thoughts?

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12-08-2021, 04:36 PM - 1 Like	#2
bertwert Veteran Member Join Date: Jun 2015 Location: Golden, BC Posts: 15,172	Well, they both output 8.4V at 400mA so no problems there. D-LI109 seems to squeeze onto the D-BC90 well enough as well - though vice versa is not possible. The only difference that may matter is the D-BC109 has a fourth "D" contact that the D-BC90 does not - I'm not sure exactly what it does, but as I understand it third party chargers don't have it either, so I guess it's probably not going to go up in flames. Interesting observation, I never would have thought to try this and could be useful in a pinch!

12-08-2021, 05:25 PM	#3
shyrsio Pentaxian Join Date: Apr 2016 Location: Tirana Posts: 780	But how do you get the battery to stay put? the D-LI109 has some sort of hooks to keep the battery in place, the D-BC90 does not provide those.

12-08-2021, 05:27 PM	#4
mikesbike Site Supporter Join Date: Dec 2016 Location: Southeastern Michigan Posts: 4,566	Since the contacts are different, I just carry both types with me when traveling. And sometimes I find myself charging both types of batteries simultaneously. I've not tried the fitting, but the slots to accommodate the batteries into each charger look to be of different sizes. But if one works for both, taking just one could save a bit of space. Fortunately, the FF K-1 and K-1II use the same battery as do the flagship APS-C bodies, so both are served with the same charger and thus the batteries are interchangeable.

12-08-2021, 05:41 PM - 1 Like	#5
ramseybuckeye Site Supporter Join Date: Apr 2009 Location: Hampstead, NC Photos: Gallery Posts: 17,296	Originally posted by phat_bog bonjour! suppose you're travelling with 2 cameras, one taking D-li90 batteries the other one D-li109 batteries. While checking voltages and specs of their dedicated chargers D-BC90 & D-BC109, well, i realised i can theoretically charge D-li109 batteries on the D-BC90 charger, which means i can travel with one charger only for both batteries and cameras. I found d-li109 charging very well on D-BC90. Any thoughts? I'm surprised that Pentax hasn't developed a convertible charger, it would sure save them money. But then aren't they going to in camera charging now?

12-08-2021, 07:06 PM	#6
phat_bog Senior Member Join Date: Jun 2016 Location: Paris Posts: 124 Original Poster	Originally posted by shyrsio But how do you get the battery to stay put? the D-LI109 has some sort of hooks to keep the battery in place, the D-BC90 does not provide those. Well, this is where the magic happens, if you push the Dli109 in the DBC90 charger with just a little punch it fits perfectly. I finished charging 2 Dli109s they seem in perfectly good shape. And the green dot appears on charge then stops when charge is done. ---------- Post added 12-08-21 at 07:13 PM ---------- Originally posted by bertwert Well, they both output 8.4V at 400mA so no problems there. D-LI109 seems to squeeze onto the D-BC90 well enough as well - though vice versa is not possible. The only difference that may matter is the D-BC109 has a fourth "D" contact that the D-BC90 does not - I'm not sure exactly what it does, but as I understand it third party chargers don't have it either, so I guess it's probably not going to go up in flames. Interesting observation, I never would have thought to try this and could be useful in a pinch! I'll post an update after 3 complete cycles with Dli109s on the same Dbc90 charger , just to see if the combo stands in time.

12-08-2021, 08:58 PM	#7
Not a Number Moderator Join Date: Mar 2012 Location: Venice, CA Posts: 10,526	If the output specifications are the same then maybe it is ok. I thought the extra contact had something to do with charge/overcharge/heat detection. Which is why some of the 3rd party batteries don't last as long.

12-08-2021, 11:11 PM	#8
photogem Site Supporter Join Date: Apr 2015 Posts: 3,525	Originally posted by phat_bog Well, this is where the magic happens, if you push the DLI109 in the DBC90 charger with just a little punch it fits perfectly. I finished charging 2 Dli109s they seem in perfectly good shape. And the green dot appears on charge then stops when charge is done. It is 100% o.k. just that you don't have the 4th contact on the D-BC90 which the D-BC109 has. The new charger has those 4 contacts because of a law in Japan, but it works without any risk! I have done it many times when once in holidays having a K5IIs and a K-S1 with me and I forgot the D-BC109.

12-09-2021, 01:01 AM	#9
Paul the Sunman Pentaxian Join Date: Aug 2011 Location: Melbourne Photos: Gallery Posts: 4,847	Originally posted by ramseybuckeye I'm surprised that Pentax hasn't developed a convertible charger, it would sure save them money. But then aren't they going to in camera charging now? The K3iii doesn't even come with an external charger!

12-09-2021, 02:41 AM	#10
Lev Veteran Member Join Date: Aug 2015 Location: Tbilisi, Georgia Posts: 1,197	kinda offtopic sorry to OP but does anybody know good, multi charger for d-li90 batteries with discharge indicator?

12-09-2021, 06:41 AM	#11
photogem Site Supporter Join Date: Apr 2015 Posts: 3,525	Hi to Tiflis: Don't use any multichargers nor 3-rd party chargers. battery question - Page 4 - PentaxForums.com Pentax D-BC90 Battery Charger (for D-LI90 batteries) reviews - Pentax Camera Accessory Review Database

12-09-2021, 08:46 AM	#12
Lev Veteran Member Join Date: Aug 2015 Location: Tbilisi, Georgia Posts: 1,197	Originally posted by photogem Hi to Tiflis: Don't use any multichargers nor 3-rd party chargers. battery question - Page 4 - PentaxForums.com Pentax D-BC90 Battery Charger (for D-LI90 batteries) reviews - Pentax Camera Accessory Review Database thanks!! so sad Pentax does not offer multi chargers :/

12-10-2021, 03:43 AM	#13
shyrsio Pentaxian Join Date: Apr 2016 Location: Tirana Posts: 780	Originally posted by phat_bog Well, this is where the magic happens, if you push the Dli109 in the DBC90 charger with just a little punch it fits perfectly. I finished charging 2 Dli109s they seem in perfectly good shape. And the green dot appears on charge then stops when charge is done. ---------- Post added 12-08-21 at 07:13 PM ---------- I'll post an update after 3 complete cycles with Dli109s on the same Dbc90 charger , just to see if the combo stands in time. thank you for this!, this will sure make packing easier with two bodies.