Which charger to use for satnav?

wazza

Have a navigo satnav which came supplied with a car charger. I also have two chargers for my different lobster mobiles whose plug will fit into the satnav. Charger 1 is for mobile 1 which chargers it at a slow rate. Charger 2 is for mobile 2 (different model) which charges at a faster rate. I know the charging time because i have used charger 1 in mobile 2 and it takes longer to charge.

At present i use charger 1 to charge the satnav. It will take ages to charge. Roughly 8 hrs. Can i use charger 2 on the satnav to improve charge time? Will any damage occur to the battery of satnav if i use a powerful charger?

roddydogs

Probably.......I wouldnt risk it. Sat Nav runs on car battery anyway, why do you need to charge it?

robmar0se

1. It goes without saying that the voltage of the charger & device must match.

2. Fast charging is based on the draw the device is able to take, so if the device is not designed for a fast charge then there is nought to be achieved. The charger for a device designed for fast charging must have an amper rating on the charger to achieve this, if the amper rating is lower then it won't charge so fast.

3. In summary, use a charger that meets the voltage/amperage designed for the unit. A lower amperage can be used, but will take longer. A higher amperage may, I say may, damage the unit, unless the unit has some built in protection.

santer_2

Some here

http://www.chargerstore.co.uk/Froogleftp/ebuyer-navigo-3-5-inch-gpscch.html

http://www.chargerstore.co.uk/Froogleftp/ebuyer-navigo-3-5-inch-gpsmch.html

espresso

robmar0se wrote: »

In summary, use a charger that meets the voltage/amperage designed for the unit. A lower amperage can be used, but will take longer. A higher amperage may, I say may, damage the unit, unless the unit has some built in protection.

This illustrates yet again why you should not post answers to any power supply related questions!

You clearly lack the most basic electronics knowledge.

A higher output power supply e.g. 100 Amp could be safely used because the device will only draw what it requires, regardless of the power supplies maximum output current capability.

robmar0se

espresso wrote: »

This illustrates yet again why you should not post answers to any power supply related questions!

You clearly lack the most basic electronics knowledge.

A higher output power supply e.g. 100 Amp could be safely used because the device will only draw what it requires, regardless of the power supplies maximum output current capability.

Expresso, You clearly enjoy being aggressive and discourteous in your comments. From your comments not just to me, but also to others, you use a rather unpleasant tone. I don't mind disagreement and debate, so why can't you find a a more polite way of stating your opinions?

May I remind you of Martin Lewis' comment on these forums,

The MoneySavingExpert.com forum is a friendly one and we want to keep it that way. Its motto is "Please be nice to all forum users", this includes the MSE Team. As an employer, it's my responsibility to ensure my team's protected.

On these boards all posters are protected by anonymity, thus advice such as yours which subsequently causes a problem you bear no liability. Bottom line, ultimately what the OP wanted to know, I have advised that the second charger will not have any material improvement in charging time, nor will my advice cause him/her any problems.

espresso

wazza wrote: »

Have a navigo satnav which came supplied with a car charger. I also have two chargers for my different lobster mobiles whose plug will fit into the satnav. Charger 1 is for mobile 1 which chargers it at a slow rate. Charger 2 is for mobile 2 (different model) which charges at a faster rate. I know the charging time because i have used charger 1 in mobile 2 and it takes longer to charge.

At present i use charger 1 to charge the satnav. It will take ages to charge. Roughly 8 hrs. Can i use charger 2 on the satnav to improve charge time? Will any damage occur to the battery of satnav if i use a powerful charger?

robmar0se wrote: »

Bottom line, ultimately what the OP wanted to know, I have advised that the second charger will not have any material improvement in charging time

rabmorase, regarding the OP's original question, you have stated that "the second charger will not have any material improvement in charging time". How can you make that statement without knowing the rated output current of charger 1 and charger 2 and the capacities of the cells? You did not ask for any of this information and the OP has stated that charger 1 takes longer to charge mobile 2 than charger 2.

Fifer

robmar0se wrote: »

1. It goes without saying that the voltage of the charger & device must match.

2. Fast charging is based on the draw the device is able to take, so if the device is not designed for a fast charge then there is nought to be achieved. The charger for a device designed for fast charging must have an amper rating on the charger to achieve this, if the amper rating is lower then it won't charge so fast.

3. In summary, use a charger that meets the voltage/amperage designed for the unit. A lower amperage can be used, but will take longer. A higher amperage may, I say may, damage the unit, unless the unit has some built in protection.

Polarity is rather important too. Most devices using DC jacks tend to use the same polarity arrangement, but it's always wise to check.