Like if i get 100 Ah , which physically will fit , won't make any harm to my car electronics ?If it will physically fit then it should be ok.
I have my battery located in the trunk , I can make place for itGo on the Tayna site where it gives the dimensions of batteries and make sure you can accommodate the larger size, normally increased length, but make sure height is not increased. Normally width is fairly constant. As LostKiwi says, make sure it will fit! My S203 has an uprated battery fitted as a Mercedes upgrade to go with the extra load imposed by heated seats, that is a Varta Silver and it's a very tight squeeze in the engine compartment under the cabin air filter. Almost needs smelling salts and chalked hands to lift into place, also it is very heavy! I would think it would take a larger higher Amp/hr battery, but don't go to big (size wise).
No harm to electronics. Starting will depend on the CCA rating. The higher the CCA the more current is available for starting.Like if i get 100 Ah , which physically will fit , won't make any harm to my car electronics ?
In other hand i should get a better starting in the morning ?