Siva001:

In the interests of safety, the stock ZMA horn and lights need to be upgraded, no question about it. The upgrades are eminently affordable and are easily performed. IMO it is a no-brainer to have these done as soon as possible.

These upgrades need more energy, which a larger capacity battery can provide. Under standard conditions, A 7 ampere hour battery can provide 7 amperes of current for one hour. A 9 ampere hour battery can provide 9 amperes over that same period of one hour. It can simply store more current, not to be confused with voltage. It is incorrect to assume that using a battery with a higher AH rating will cause damage to the electrical system. When the engine runs, its alternator continuously generates current, some of which is routed to the battery to recharge it.

Remember, a battery does not 'produce' electricity, it is akin to a reservoir that stores & provides energy in the form of electricity when needed. When the electricity is drawn, it leads to a discharge, which the bike's electrical system needs to recharge to bring battery storage levels back to the brim.

It remains to be proven whether or not the ZMA's electrical system is capable of recharging a 2AH larger capacity battery. In the interests of safety meanwhile, upgrading the light and horn along with the battery seem to be the right thing to do.

Worst case scenario? The battery wont get recharged enough and *may* need replacement before the end of its design life. No biggie, batteries luckily don't cost the moon.

If your battery needs to be replaced, then go with a 9AH, which will make it capable to give your bike the extra juice as and when needed.

Siva001:

In the interests of safety, the stock ZMA horn and lights need to be upgraded, no question about it. The upgrades are eminently affordable and are easily performed. IMO it is a no-brainer to have these done as soon as possible.

These upgrades need more energy, which a larger capacity battery can provide. Under standard conditions, A 7 ampere hour battery can provide 7 amperes of current for one hour. A 9 ampere hour battery can provide 9 amperes over that same period of one hour. It can simply store more current, not to be confused with voltage. It is incorrect to assume that using a battery with a higher AH rating will cause damage to the electrical system. When the engine runs, its alternator continuously generates current, some of which is routed to the battery to recharge it.

Remember, a battery does not 'produce' electricity, it is akin to a reservoir that stores & provides energy in the form of electricity when needed. When the electricity is drawn, it leads to a discharge, which the bike's electrical system needs to recharge to bring battery storage levels back to the brim.

It remains to be proven whether or not the ZMA's electrical system is capable of recharging a 2AH larger capacity battery. In the interests of safety meanwhile, upgrading the light and horn along with the battery seem to be the right thing to do.

Worst case scenario? The battery wont get recharged enough and *may* need replacement before the end of its design life. No biggie, batteries luckily don't cost the moon.

If your battery needs to be replaced, then go with a 9AH, which will make it capable to give your bike the extra juice as and when needed.

And a larger battery funda only works if you give the battery sufficient time to charge between drainages. This wont happen, for instance, if you ride only at night.

If the alternator is generating a constant current, then what you say is true... not otherwise! The charging system will have to work harder and more gas will be used (the magnitude of which may be v small) in that case, which in turn may reduce reliability and longevity.

Your bike's 'alternator' is none other than the coil/magneto located on the left of the engine on most bikes. As you might have noticed, it runs continuously since it is located on the crankshaft and rotates along with the crank. It has a fixed output that varies only with engine rpm. In other words, the only time it isn't running is when the engine is switched off.

The amount of crankshaft energy (petrol, indirectly) the magneto uses to generate electricity is constant and this will not change even if you were to install a 120AH truck battery in the ZMA (ignoring the extra fuel consumed to lug the extra weight of the truck battery around) .

As an example: Take the delicate circuitry of a digicam. You could use 3200 mAh AA cells or 1000 mAh rechargeable NiMH cells. Both do the same job, but the 3200 mAh cells last longer. Last longer, without damaging the camera circuitry.

i think the enginners who choosed 7ah battery are more intelligent than us..........they must have considered all the criteria only after which they have selected 7ah. r15 has 3.5 ah battery.....now the starter motor of r15 is only of 0.2 kw.....whereas karizma starter is 0.5 w. 220 pulsar has 0.6kw starter of bullet 500 is more than 1 kw.(may be 1.2)

so there are various factors considered in a bike for choosing starters......

i dont think one should change to a 9ah battery unless he adds some modifications like air horns or HID.

stock zma 7ah battery is enough. the zmr has even reduced battery of 6ah.

This is true in case of Indian bikes. They use Permanent Magnet Charging System. But most big capacity bikes and all cars use Field Coil Charging System. Here, amount of fuel consumed vary with load.



The ONLY criteria is choosing a battery is to make sure that it supplies enough power to crank the engine. Nothing else. Battery is not choosen considering lighting. A big bore engine can be easily turned over compared to a long stroke engine and hence does with a lower power starter.

This is true in case of Indian bikes. They use Permanent Magnet Charging System. But most big capacity bikes and all cars use Field Coil Charging System. Here, amount of fuel consumed vary with load.

That is good to know, but is irrelevant in this discussion - this is the HH Karizma Ownership thread after all .

i think the enginners who choosed 7ah battery are more intelligent than us...........

i think the stock horn is ok, better than cbz

my friend got roots horn in his bran new zma 6 month back and now his battery is finished........warranty void too.

Even Kinetic Flyte which is 125cc uses a 9-amp battery. Once again, I reiterate, Karizma's electricals can sustain more load than the stock; 9-amp battery can be used without any issues. People have been using it without any issues since long time.

iam planning to install a new bulb for the headlight..since i went thru the forum i guess osram nightbreaker is the best...have a few question thou..

1. how much wattage is it and what type is it?
2. Should we install anytin along with it or direct fit..
3.is there any other better option bulbs ?
4.does fitting a different bulb than the stock bulb void warrantY?

I hope u guys help me out...

tc

safe riding

Can someone using dual horns, please let me know a place on the bike to mount both of them? Thanks in advance.