Results 1 to 8 of 8

Thread: Osram Camping Lantern

  1. #1
    Full Member
    Join Date
    Aug 2013
    Location
    Port Elizabeth
    Posts
    65
    Thanks
    3
    Thanked 3 Times in 3 Posts

    Osram Camping Lantern

    I recently moved house and have mislaid/lost the AC-DC mains adaptor for this lantern. I've opended it and it has a recharable battery LA 640 6V:4A.
    What type of adaptor must I buy for this?

  2. #2
    Suspended
    Join Date
    Mar 2013
    Location
    Had enough
    Posts
    3,358
    Thanks
    114
    Thanked 213 Times in 201 Posts
    Exactly that ....... a ac/dc 6volt output adapter - quite common
    You can even purchase a universal one from Builders that you can adjust your output

  3. #3
    Full Member
    Join Date
    Aug 2013
    Location
    Port Elizabeth
    Posts
    65
    Thanks
    3
    Thanked 3 Times in 3 Posts
    Thanks so much, got a BW near me.

  4. #4
    Diamond Member Justloadit's Avatar
    Join Date
    Nov 2010
    Location
    Johannesburg
    Posts
    3,480
    Thanks
    134
    Thanked 695 Times in 593 Posts
    Blog Entries
    1
    Not quite so, those universal adapters are not voltage regulated, and if the current is too high, it will damage the battery. As the charging process does not stop when the battery is full, but will continue forcing more energy into the battery, causing damage to the chemical, plates and overheating damage.

    Does the lantern have an internal charger electronics in it, or does it rely on the charger to be regulated?
    This is evident by a small printed circuit board with some black coloured electronic component with a number of small legs. A simple resistor, blue or brown coloured tube with 2 legs is not a charger!
    Being a 4Amp lead acid battery, and if no charger is present in the lantern, then the charger must be current limited to 7V and 600mAmp, especially if you leave the charger on for many hours connected.
    Victor - Knowledge is a blessing or a curse, your current circumstances make you decide!
    Solar pumping, Solar Geyser & Solar Security lighting solutions - www.microsolve.co.za

  5. #5
    Full Member
    Join Date
    Aug 2013
    Location
    Port Elizabeth
    Posts
    65
    Thanks
    3
    Thanked 3 Times in 3 Posts
    Hi, thanks for your very informative reply. I unscrewed the bas and there is a PCB tucked inside.
    I have found several AC-DC adaptors in our stuff which we moved and on has the following description.
    Input : 230-240V~50Hz
    Output : 12V=600mA 7.2 VA.
    Do you think this could be the "missing adaptor"?

  6. #6
    Suspended
    Join Date
    Mar 2013
    Location
    Had enough
    Posts
    3,358
    Thanks
    114
    Thanked 213 Times in 201 Posts
    Nope 12v is more than 6v - as Justloadit says I wouldn't go more than 7v

  7. #7
    Full Member
    Join Date
    Aug 2013
    Location
    Port Elizabeth
    Posts
    65
    Thanks
    3
    Thanked 3 Times in 3 Posts
    Thanks, it might be easier for me to buy a new one as this one is a about 7 years old. Maybe the battery is knackered.

  8. #8
    Diamond Member Justloadit's Avatar
    Join Date
    Nov 2010
    Location
    Johannesburg
    Posts
    3,480
    Thanks
    134
    Thanked 695 Times in 593 Posts
    Blog Entries
    1
    Quote Originally Posted by pedruid View Post
    Hi, thanks for your very informative reply. I unscrewed the bas and there is a PCB tucked inside.
    I have found several AC-DC adaptors in our stuff which we moved and on has the following description.
    Input : 230-240V~50Hz
    Output : 12V=600mA 7.2 VA.
    Do you think this could be the "missing adaptor"?
    Can you take a picture.
    Battery replacement is easy, Mantech has one
    Victor - Knowledge is a blessing or a curse, your current circumstances make you decide!
    Solar pumping, Solar Geyser & Solar Security lighting solutions - www.microsolve.co.za

Similar Threads

  1. Camping in the Kalahari
    By Neville Bailey in forum General Chat Forum
    Replies: 3
    Last Post: 28-Mar-11, 09:42 AM

Did you like this article? Share it with your favourite social network.

Did you like this article? Share it with your favourite social network.

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •