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Details about  BBC MASTER 128 NEW REPLACEMENT LITHIUM LONG LIFE CMOS BATTERY PACK

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BBC MASTER 128 NEW REPLACEMENT LITHIUM LONG LIFE CMOS BATTERY PACK
BBC-MASTER-128-NEW-REPLACEMENT-LITHIUM-LONG-LIFE-CMOS-BATTERY-PACK
Item Ended
Item condition:
New
Ended:
22 May, 2012 19:28:38 BST
Price:
£8.95
[
History:
]
Postage:
£3.80 Royal Mail International Standard (Small Packets) | See details
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Item location:
Hainault, Essex, United Kingdom

Description

eBay item number:
251055472647
Seller assumes all responsibility for this listing.
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Item specifics

Condition:
New: A brand-new, unused, unopened and undamaged item in original retail packaging (where packaging is ... Read moreabout the condition
Product Type: Battery
System Options: BBC Master 128 System: Acorn
Platform: BBC Master 128

BBC MASTER 128 - REPLACEMENT CMOS BATTERY PACK - MBAT/LTH

This is a buy-in-now sale for a brand new replacement CMOS Battery pack, for the BBC Master 128 and BBC Master ET range of computers.

Is your BBC Master starting up incorrectly? Giving Error messages? You've reset your CMOS, but it won't save the setting overnight? You probably need to replace the CMOS battery pack with the ones available from RetroClinic.

One of the things most forgotten on the BBC Master, is the fact that it contains a battery. Although it is recommended that regular alkalines are replaced every 12 months, some have still got their original cells in. This causes leaks, mostly over the plastic casing, but if too severe, can leak onto the PCB and keyboard, and cause serious damage to the internals of your Beeb.

The most common type of battery pack found in the Master is a sealed pack, in which the cells cannot be replaced on their own, the entire pack must be changed. Even in machines that have the 3 cell holders, if the batteries have started to leak, it is recommended to change the holder and the cable, as the alkali from the cell can corrode up the cable and onto the PCB connector.

So why not just go out and buy some batteries and connect them up yourself? There is a good reason why you should not. The BBC Master PCB was designed for a rechargable battery in mind, and as such, when the machine is on, will attempt to charge any battery connected to it. For non-rechargable batteries, this is very bad, and can cause overheating, or worse. To counter this, all BBC Master battery packs, including the one supplied here, is fitted with a diode, and current limiting resistor, to prevent back-charging.

This sale is for the long life option, which is a single 3.6 volt lithium thyonyl chloride battery, designed for very low drain applications, such as computer CMOS memory. This type of cell can last in excess of 5 years, but it's a good idea to check the voltage after 3 years, to make sure it's still good. I also sell a budget option, which comprises 3xAA Alkaline cells, which last on average about a year before they need replacing. Please see my other listings, or contact me if they have sold out.

The kit comes with a single AA size 3.6v lithuim cell, as well as a new battery holder and cable with the components fitted, as described above, along with complete fitting instructions, including how to reset your CMOS memory, and how to reset your Econet Station number, should you have an Econet system. The rear of the battery holder is fitted with strong self-adhesive padding, to fix to the inside of your case.

PayPal accepted with NO surcharge. Thanks for looking! Kits are also available to upgrade the Acorn BBC B or Master with our well established Internal and External DataCentre USB and 1MB RAMdisc upgrades. 1770 Disk Upgrade kits, ZIF Sockets, and other refurbished BBC Model Bs and Master 128s pre-fitted with the CF and/or USB system ready to go are also available! I also do repairs to Pre-Model 2 Sega and Vector Atari PCBs. Please check my other items for sale, or if they've sold out on my listings, please contact me for details, and I will re-list them for you.


Business seller information

RetroClinic.com

Returns policy

Return policy details
Items will be accepted for return within 14 days if you are not completely satisfied. A full refund of the purchase price will be given, minus any eBay fees incurred and postage. Return postage must be paid by the buyer, and items must be returned complete, and in the same comdition as which they were sent. This return policy does not apply to items sold as "Faulty" or "as seen" in the auction text, unless the description varies conciderably from the actual item.
Most purchases from business sellers are protected by the Consumer Contract Regulations 2013 which give you the right to cancel the purchase within 14 days after the day you receive the item. Find out more about your rights as a buyer - opens in a new window or tab and exceptions - opens in a new window or tab.

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