5 years
A battery can last from 1 year to many years. You change it when it no longer will start the car or when it no longer will hold a charge.
Batteries have a life span. Depending on many factors they can last up to 7 -8 years. Normally they will not last much longer than 4-5 years. Discharging the battery will shorten it's life, and the more times it is discharged to shorter it's life. Keeping the battery clean, will help. Heat and vibration is the enemy of your battery. No battery will last forever.
There are many places one might go to find information about the Vtech Walker. The most reputable resource would most likely be the official Vtech website.
Yes, any decent battery should last at least 3 years of more. Now, if you have run the battery down many times then you have shortened it's life. Every time you run it down it's lifespan is drastically reduced.
I did not locate a solar panel laptop itself, but there are solar panel laptop charger for the laptop battery. these will last many years and substitute for buying a laptop battery every year.
I am still using the same car battery for 8 years 4 months and it is fine , but I've had a battery develop a dead cell at 3 years 10 months ( the battery had a 4 year free replacement period ) Know that every time you run the battery down, you take months away from the life of the battery. Many things contribute to the life of a battery. Short trips of less than 20 minutes will shorten the life as the alternator will not fully recharge the battery. Extreme temperatures either hot or cold shorten the life of a battery. On average a battery will last from 36 to 48 months. But I have had them last 7 years and others that only lasted 3 years.
Its all dependent on many factors. Usally it can go a good 2-4 years.
If the battery is a typical lead acid batter, that is removed from the mower in winter, and stored in a warm space not sitting on the cement floor etc.. then the battery should last many years. Typically about 5 yrs. There are many factors that impact battery performance. Temperature is one of the biggest. Another is if you leave the battery in the mower, and you use it 1 time per week for an average of 26 weeks, and only change the oil in the mower one time (ie poor maintenance schedule) then you can't expect the battery to last any more then a couple years.
This greatly depends on how many cells the battery is. But typically a battery's life is about a year to about 2 years with extra careful use. You can try to make the battery last longer by charging it only when it has barely any charge left and not keeping it hooked up to the charge all night.
It depends on how much drain is placed on the battery !
Stauer watches are one of the finest watches on the market and can last decades if well-cared for. If you do not drop, soak, or otherwise abuse them and change the battery as needed, they could last you many years.