Thread: triton resperator batteries

How much is the replacement part from Triton? (It is sold as a spare part - ie the whole module inside the orange case)

Not available in UK Stuart, I did consider asking an aussie friend, Bunnings were selling the complete outfit for just a little more 18 months ago.

Just curious if the m-ah batteries would have any kickbacks?

Originally Posted by jow104

kickbacks?

Pommy for drawbacks, or shortcomings, John?

Can't see a downside, myself, as long as the correct charger is used. Could run the fan a little faster, the nicads were 1.2v & I think the NiMh ones will be 1.5v. May or may not make a slight difference.

More run time in the NiMh I'd reckon.

Edit: I think the voltage will be the same, at 1.2v for the NiMh.

Scooter, your interpretation is correct.

The electrical engineer reckons he is going to get 1.2's.

Just wondering - ISTR that NiMH and NiCd batteries use a different charging cycle (my charger has a switch to tell it what kind of batteries are being charged, so there must be some diff). If so, is the electrical engineer also setting up a new charger for the batteries?

First I'm surprised you can't find D cell tagged Ni Cad batteries in the UK. They should be available from any electronics hobby supplier.

RS has them:

http://uk.rs-online.com/web/search/s...duct&R=5046231


but that's a pretty steep price. You should be able to get them cheaper than that. RS is not famous for being cheap...Farnell:

http://uk.farnell.com/908770/electri...ies-gp450dknhb

is a bit cheaper.

The only difference I know of between nickel metal hydride and nickel cadimium is the memory effect and the capacity/charge rate. NiMh are usually higher and don't need to be discharged prior to recharge.

As stated you'll clog your filters a little faster with the higher air flow, but it shouldn't be a big deal...

Hope that helps.

Thanks above, (BTW a new charger was included in the quoted price above)

Originally Posted by jow104

The ni-cad 1.2v batteries in my triton resperator have expired and I have not been able to locate any replacement batteries of this type and size in the UK.

A local electrical engineer is going to fit M-ah type batteries and a new charger. (for £36, /$80)

Anyone any adverse comments?

Not sure what you mean by M-ah batteries ?

Usually mAh refers to the capacity of the cell or battery. eg 2500 mAh 1.5 V cell means that it can provide 2500mA current for 1 hour at 1.5V or 500mA for 5 hours at 1.5V etc.

Ni-Cad, NimH and Lithium refer to the type of cell (chemical technology used)



Chipman

I expect I should have written Nimh, it was a telephone discussion and I didnt have my hearing aid on.

You seem to be on the right track with what you are doing. You could simply get someone to replace the faulty Nicad cells with new ones that are the same and thus use the same charger. There will be people that can rebuild it for you. It is quite a common thing to rebuild battery packs.

If you are going to switch to a different type of cell, make sure you know what you are getting. Also you will need to have the charger match the cells.

You will need five 1.2V cells to make up the 6V needed for your respirator. The cells come in different mAh ratings. For example a typical D nicad might be 1400 mAh while D Nimh cells could be 2500, 7000 or even 10,000 mAh. The higher the number, the longer it will run your respirator between charges. Naturally, the higher the number the more expensive the cells will be too!

There are other possibilities too such as using a comercially available 6V battery pack and its charger, or make your own battery pack with commercially available cells and chargers.

So many choices..........

Have fun and I hope you get it sorted
Chipman

Give you the verdict when I get it back from the engineer.

I will be handy if its a quicker charge this time, the other cells were very long winded waiting for a charge.