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Schematic for Uniden EXP95 900 MHz wireless phone

Discussion in 'Electronic Repair' started by Isaac Wingfield, Jan 14, 2005.

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  1. I'm trying to hack the thing to use a NiCd battery instead of the $20
    lead-acid that died.

    Any chance that someone has a copy?

    Isaac
     
  2. NSM

    NSM Guest

    | I'm trying to hack the thing to use a NiCd battery instead of the $20
    | lead-acid that died.
    |
    | Any chance that someone has a copy?
    |
    | Isaac

    A 900 MHz phone with a lead-acid battery? That's very weird. What country is
    this in?

    N
     
  3. Jerry G.

    Jerry G. Guest

    This is a very big old industrial type of phone from what I can remember!

    You are best off with the original battery. The design of the charger
    section would have to be modified to accommodate to charge a NiCad battery,
    or the Lithium which is different again. The charge current rates for the
    different types of batteries are not the same.

    Also, there is the question of the amp hour rating, and the average load
    conditions, thus having an impact on the amount of time between charges.

    As for having the same amp hours in a NiCad, as in the lead acid type, the
    lead acid type will give a lot better performance, and better stability.
    Lead acid batteries are also more stable over their lifespan, especially
    under harsh conditions. If your phone is to be used in cold weather
    conditions, the lead acid battery is a much better choice.

    If you look in to the newer industrial phone units, they are a lot smaller,
    and more efficient than what you have.

    As for servicing your phone, only Uniden can service it. They DO NOT give
    out or sell ANY service information, such as schematics, and technical
    writups. They also DO NOT sell ANY spare parts. You can only buy user
    accessories for this phone.

    In the future if there is a fault with your phone, as for doing anything
    more than the basic service, you would still require the proper test
    set-ups, and diagnostics systems to locate the faulty components.

    --

    Jerry G.
    =====

    I'm trying to hack the thing to use a NiCd battery instead of the $20
    lead-acid that died.

    Any chance that someone has a copy?

    Isaac
     
  4. California.

    Isaac
     
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