What is the difference in dry & wet battries

[sameerq]

Dry batteries are maintanance free they do not require topping up like regular wet batteries, and have gel electrolyte

They are basically used in:

(i)aeroplanes since aeroplanes can turn upside down when doing a somersault in the air

(i)roadside cabinets to power up UPSs such as those for cable TV networks etc, since wet batteries would release fumes inside the cabinet which has to be completely sealed to prevent vandalism

For cars the engine cavity has plenty of ventilation so there is no problem of vapors,

Performance wise dry batteries have slightly longer life and thus cost more

Starting a manual car is simple as explained by @humangenius and @takko

[leolion007]

@sameerq gud explanation:D

[Porsche_Maker]

@all

Once i recharged my Wet battery also as it died

[brownrose78]

coming back to topic seriously, a
acc. to my experience, dry battery is giving me more lifespan than wet one.
also dry called maintenance free batteries have more recharging capability & more more good than wet one.
charging/recharging is done by dynmo/generator/alternator etc. wheter it is dry/wet

i am using maintenance free battery in 1 car in more than 4 yeras & still it is working good so more life of dry batt.

[electromans]

basically dry batteries have 2 categories. primary and secondary. primary are not rechargeable like carbon-zinc, lithium, mercury, alkaline etc. all secondary are rechargeable like nickel-cadmium(ni-cd), nickel metal hydride(ni-mh), lithium ion(li-ion) etc. car dry battery has lead plates like wet lead-acid battery but it has viscous gel type inside making it a sealed maintainance free battery. unlike wet lead acid battery, it gives same performance in every season and more efficient. thats why they are expensive.

[CrashD]

ahhh Dry hurts wet doesnt!