Can I Use a CTEK MXS25 Charger for a 9Ah Motorcycle Battery?

Question

Hello, Over the winter, the battery in the motorcycle ran out and is currently 1.8V. I do not have a rectifier for motorcycles, so hence my question: The battery in the motorcycle has a capacity of 9Ah (it has been deeply discharged) and my charger manual says that it is used to charge batteries...

bearq · Accepted Answer

If the voltage has dropped to 1.8V, you can safely dispose of it, it will be fine.

jdubowski · Accepted Answer

But the rectifier too smart. It won't.

misiek_89 · Answer

Ok, then there is nothing else to do but buy a new battery.

And on the technical side, if I need to recharge my motorcycle battery, is my charger suitable for this? I spent a lot of money on it and now I have to buy another one for small batteries ...?

wojtek1234321 · Answer

You can connect it, but as above, the battery is rather scrap. The next thing is whether the charger will start at such a low battery voltage, or only the Error LED will light up. I do not know how they have CTEK-i (although I have one myself), or like others that it does not start charging when the battery voltage is too low, or the charging starts regardless of the battery voltage.

jdubowski · Answer

The simple answer is - this charger is not suitable. You should start with checking the nominal voltages - motorcycle battery (6V? 12V?) And the charger. If the voltages are in agreement and the rectifier is stupid enough (transformer + bridge), the charging current can be reduced by including the resistance in the series (the easiest way - a properly selected bulb). If the rectifier has automation - it will not be suitable.

paszczakq · Answer

Is this battery 12V or 6V? And whether this charger can also charge 6V batteries.

misiek_89 · Answer

The tensions match. 12V battery.

wojtek1234321 · Answer

The MXS 5.0 charger is a fully automatic 8-step charger that allows you to charge 0.8 A or 5 A to 12 V batteries from 1.2-110 Ah and also allows maintenance charging up to 160 Ah.

paszczakq wrote:
And whether this charger can also charge 6V batteries.

Probably not, it is probably only 12 V.

misiek_89 · Answer

My friend, everything is correct, but I have a MXS 25 charger and I'm afraid if it is too strong for batteries with a capacity as small as 10Ah.

wojtek1234321 · Answer

Oh gosh, I didn't notice it's a truck loader According to the manual, the batteries start from 40 A ...

misiek_89 · Answer

So I'll just ask for the future. How do I connect my CTEK MXS 25 charger to small capacity batteries, I can damage something will the battery simply not be charged?

rafbid · Answer

Rather, it won't start charging. If it starts charging, too high a charging current will lead to faster wear of the battery. If you have no choice, you can try to force the charger to charge using the SUPPLY program

paszczakq · Answer

Let's not exaggerate. It has a 9 Ah 12V battery, the charger has a charging current of 0.8 A. It's just C / 10 so nothing will happen. In addition, it is for temporary charging once in unknown how much. Even these chargers from Lidl have a choice of 0.8 or 3.5 A (motorcycle or car key). Buying something else in decent quality is just like the battery that you currently need. Why make yourself unnecessary costs.

rafbid · Answer

The charger has a charging current of 25A

paszczakq · Answer

Well, a maximum of 25A. There is a RECOND program with 3A current, but that's also a lot.

rafbid · Answer

RECOND charges with 15.8 V in the 6th stage. In the first stages, it charges a maximum of 25 A anyway

kkknc · Answer

Rather scrap battery. You can charge it so much that it will probably not start without assistance.

rafbid · Answer

The SUPPLY program is a function of the power supply.

Can I Use a CTEK MXS25 Charger for a 9Ah Motorcycle Battery?

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