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Third party batteries for the EM1ii (and EM1X)

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  • jima
    replied
    Originally posted by Walti View Post
    That's a very nice graph, but it's not what I find in practice.
    Thank you, but it is what I have found in practice. There are some variants, are you referring to the black pack rated (supposedly) at 2450mAh?

    I have an original Olympus and two Ex-Pro batteries for the E-M1i and the Olympus one definitely lasts longer than the Ex-Pro.
    Previous ExPro's I have tested (not BLH-1) have fallen far short of rated capacity and compared poorly to the Olympus packs. This one did surprise me but retests confirmed the capacity. One big issue with cheap packs is variable cell quality. That is one of the things you pay for with manufacturers own branded packs.

    One of the Ex-Pros has started to swell slightly as well (presumably on it's way out)
    A not uncommon problem with them and other packs using low cost cells (including cheap laptop packs FWIW). I strongly advise you to take it out of service immediately and discard it.

    They are a few years old and have been well used. Having said all the above, given the price difference the performance isn't sufficiently different to complain about!
    I don't disagree however you may feel differently if it should burst in your camera or become jammed due to the swelling.

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  • jima
    replied
    Originally posted by Melaka View Post
    Thank you. For those of us who are not tech savvy could you please explain the graph in a little more detail? For example at what point on the graph would the battery be shown in the camera as fully discharged? If, for instance, it's 7 volts then the DSTE does not do at all well and the Oly isn't a lot better. What is the significance of the +1M? I find it confusing that batteries which look the same externally can have such different claimed capacities. It's also unhelpful that gremlins have removed some of the earlier posts in part or altogether.
    Of course. The batteries are discharged until the pack's internal protection system cuts them off and also forms part of the test as I have seen packs where this fails. This point on the graph is where the plots become vertical and drop to zero volts. Typically this is just over 5 volts. The +1M should read +2M and is a retest after a full charge and a two-month (approx - dates in the graph title) to assess the internal self-discharge of the cells.

    It is no surprise that there is such variance. If you open up packs you will find a great variance in both cells (capacity and manufacturer) and control circuit board design. Many cells belie the stated capacity of the pack and some are positively frightening. Circuit boards vary greatly, the cheaper ones especially can be nasty as they sometimes do not have fusible short circuit protection. Anyone can print a nice label on a pack knowing that they are rarely if ever opened up to inspection.

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  • Walti
    replied
    That's a very nice graph, but it's not what I find in practice.

    I have an original Olympus and two Ex-Pro batteries for the E-M1i and the Olympus one definitely lasts longer than the Ex-Pro.

    One of the Ex-Pros has started to swell slightly as well (presumably on it's way out)

    They are a few years old and have been well used.

    Having said all the above, given the price difference the performance isn't sufficiently different to complain about!

    Leave a comment:


  • Melaka
    replied
    Thank you. For those of us who are not tech savvy could you please explain the graph in a little more detail? For example at what point on the graph would the battery be shown in the camera as fully discharged? If, for instance, it's 7 volts then the DSTE does not do at all well and the Oly isn't a lot better. What is the significance of the +1M? I find it confusing that batteries which look the same externally can have such different claimed capacities. It's also unhelpful that gremlins have removed some of the earlier posts in part or altogether.

    Leave a comment:


  • jima
    replied
    Originally posted by Melaka View Post
    Re: Third party batteries for the EM1ii (and EM1X)

    ExPro are now selling on Amazon what seems to be a newer version of their BLH1 equivalent. It claims to be fully decoded and rates at 2450mAh which is amongst the best. I charged it in the ExPro charger I bought some while ago but foolishly failed to try it in the Oly one when it was discharged. I get the green light when I put it charged in the Oly charger so I guess it works OK. There is no error message in the camera and the %age display is correct.
    I have yet to test the fully decoded version of the ExPro but if you are hoping to get 2450mAh from it I suspect you will be disappointed. That does not make it a bad pack as the best of my tests put it at 1956mAh, still nearly 300mAh up on the Olympus pack. It also has a better self-discharge performance compared to the Olympus pack so quite a good value and in my opinion a much safer bet than some of the real unknown extremely cheap brands out there. Low cost means cheap circuitry and cheaper cells so use at your risk, folks! A fully decoded version of the ExPro which will charge in the BCH-1 will be even better value.

    Tests are a sample of one of course however the new E-M1X has just landed with four BLH-1's so perhaps we will repeat the tests against the new EXPro in the near future.

    Click image for larger version  Name:	blh1_clonetests.jpg Views:	0 Size:	140.7 KB ID:	770763

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  • Melaka
    replied
    Re: Third party batteries for the EM1ii (and EM1X)

    I've now ended up with a mix - Green Cell, Patona Platinum and ExPro. They all have different capacities which in turn are different from the OEM. As far as I can see they all work well and are fully compatible so one may assume the original problems have been overcome by whoever makes them.

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  • DerekC
    replied
    Re: Third party batteries for the EM1ii (and EM1X)

    I wanted some spare batteries for my E-M1X & Mk2 so after reading this thread and checking Amazon I bought the Greencell batteries. They are rated at 1900mah.
    I have three so far just ordered my fourth.
    They come part charged, although last one was fully charged. They do charge on the Olympus charger and take around the same time.
    In camera the correct information is shown and there performance is good. The information says first time charged you should allow the battery to get down to about 6% before charging.

    I will stick with Greencell for my third party batteries.

    Leave a comment:


  • Melaka
    replied
    Re: Third party batteries for the EM1ii (and EM1X)

    Not having had the older batteries I'm not in a position to comment but my post did say the early problems seem to have been overcome. There is no error message and the %age charge shows.

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  • DavidB
    replied
    Re: Third party batteries for the EM1ii (and EM1X)

    Originally posted by Melaka View Post
    There is no error message in the camera and the %age display is correct.
    Please confirm that means the problems previously posted in Amazon reviews have now been sorted, as that will give me the confidence to place an order (after getting an Amazon link from Ian so the forum will receive a small contribution):


    27 April 2019
    Size: LCD USB Charger & 1 BatteryVerified Purchase
    Battery very good value for money, holds its charge very well and seems to be just as good as original olympus battery although it doesn't show the percentage of remaining power as the original. I recommend this battery as a back up to the original.

    15 January 2019
    Size: LCD USB Charger & 2 BatteriesVerified Purchase
    Purchased these as an alternative to the very expensive Olympus batteries. So far I have not been disappointed, OK you get the message that these are not genuine but they work just as well as originals. I have 2 installed in my camera and there was still plenty of life left after after a day's shooting in York. All-in-all a great buy

    Leave a comment:


  • Melaka
    replied
    Re: Third party batteries for the EM1ii (and EM1X)

    Yes it is. I didn't note how long it took to charge and in any case the batteries are part charged on arrival. I get a sense it takes longer than with an Oly one, but can't be sure. That may be something to do with the input being 12v USB rather than 230v mains. You would need to bear in mind that there is a considerable variation in the capacity of BLH1 batteries (see earlier posts) and that will affect charge time. The ExPro does charge Oly batteries. Being USB you can use it in the car and, in our case, the motor caravan.

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  • DavidB
    replied

    Leave a comment:


  • Melaka
    replied
    Re: Third party batteries for the EM1ii (and EM1X)

    ExPro are now selling on Amazon what seems to be a newer version of their BLH1 equivalent. It claims to be fully decoded and rates at 2450mAh which is amongst the best. I charged it in the ExPro charger I bought some while ago but foolishly failed to try it in the Oly one when it was discharged. I get the green light when I put it charged in the Oly charger so I guess it works OK. There is no error message in the camera and the %age display is correct.

    Leave a comment:


  • Melaka
    replied
    Re: Third party batteries for the EM1ii (and EM1X)

    Originally posted by Keith-369 View Post
    Just a quick question -

    Are all these batteries mentioned being bought from Amazon?

    If not it would be nice to know where they are being found and bought from so that others can look and make their choice.

    Thanks
    My Patona Platinum and Green Cell came from Amazon UK.

    Leave a comment:


  • peak4
    replied
    Re: Third party batteries for the EM1ii (and EM1X)

    Originally posted by Keith-369 View Post
    Just a quick question -

    Are all these batteries mentioned being bought from Amazon?

    If not it would be nice to know where they are being found and bought from so that others can look and make their choice.

    Thanks
    The Dot.Foto ones I mentioned came to me from ebay, but note that they are advertised with at least two capacities.
    The two I have both seem to charge OK with the Olympus charger, as well as the ExPro one, and seem to be recognised by the cameras as genuine.
    I've not had either the camera, or the batteries long enough to give an informed opinion on longevity, but initially they seem broadly compatible with my only genuine battery

    Leave a comment:


  • raichea
    replied
    Re: Third party batteries for the EM1ii (and EM1X)

    The two Patona Platinum BLH-1s I ordered from Amazon.de turned up yesterday and have charged up OK in the Olympus charger and display correctly in camera.

    Leave a comment:

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