That depends on the chemistry of the electrolyte and the quality of the soldermask, but you'll rarely see more than superficial corrosion. Batteries are a far

That depends on the chemistry of the electrolyte and the quality of the soldermask, but you'll rarely see more than superficial corrosion. Batteries are a far bigger problem - most computers have a battery on the motherboard to power the real-time clock, which will do horrendous damage to the PCB if it leaks.