sign of a dying battery

[ami500]

Yep, sounds like it's not holding a charge for long anymore.

Good excuse to do the li-ion battery upgrade to me.

All you need is the battery, battery socket and a diode in the way of parts.

And when you need to replace the battery again in about 10 years no soldering will be required, just pop the old one out and pop a new one in.

AND, you can store it without worrying about battery leak.

[ami500]

[ami500]

PaSha wrote:

ami500 wrote:
Good excuse to do the li-ion battery upgrade to me.

Jope wrote:
Ami500,

Are the coin cells lithium ion too? I thought Li-Ion is only a rechargeable battery chemistry?

Correct, Li-Ion batteries are rechargeable batteries, commonly found in cellular phones, video cameras and such. As mentioned above, they don't require to be fully depleted before recharging, but can be charged at any time without noticable damage. (AFAIK)

Ami500 wrote:

The lithium ones are the button batteries. You typically find them on all new PC motherboards for example.

They arn't rechargeable, that's why the diode is required so you don't explode it.

Yup, the coin cells are Lithium, but only Lithium, not Lithium-Ion

-Paul

Ah. That'll explain the difference.

[ami500]

Stedy wrote:
What ever you do, do not put a rechargeable Lithium Ion cell in your Amiga, you could set it on fire!

Li Ion cells require close control when recharging, over do it and they explode! All current Li Ion charging systems including mobiles have dedicated charging chips.

You can get Lithium cell batteries that are coin shaped and have a long life. To use one of these you would need to remove the connection from the Amiga's charging circuit, typically a 1N914 diode.

You can safely replace a NiCad with a NiMh cell and leave the charging circuitry intact. NiMh cells do not have the corrosive 'goo' of NiCads.

Yea that's the diode I used so the battery won't get a charge and explode due to the lack of a regulated charging circuit that you mentioned.  It is well worth the conversion as you'll never need to solder in another battery again. And the less soldering the better. And it's dead easy to do as the diode just sits on the positive side of the battery clip. No special mods to the machine are required.