How to Restore the lawn mower battery (Complete Guide)
The problem of batteries is very common and repeated in the lawn mower. The battery of the mower goes dead or it is not working properly and very annoying for the operator when the machine is not working due to battery problems. In today’s article, I will discuss how to restore the lawn mower battery of your lawn mower at home and if is there any solution for a dead lawn mower battery.

TYPES OF BATTERIES USED IN LAWN MOWER
The battery is the most important part of the lawnmower. Without it, your mower will not start or even work properly, and you will face difficulty mowing. To keep your mower running, it is essential to understand the different types of batteries used in mowers.
Lithium Batteries
Lithium-Ion (Li-Ion) Batteries are the newest type of battery on the market. Li-Ion batteries are more durable, higher energy density than other ordinary batteries. These batteries are capable of powering any mower. These batteries are compact in size and lightweight. These batteries are maintenance-free and, mostly, when defective, are not repairable.
Lead Acid Batteries
The lead acid battery is the most popular and commonly used type. Most mower manufacturers use these batteries because these batteries are relatively inexpensive and easy to maintain; even repairing these batteries is possible. Therefore, these batteries are a popular choice for many homeowners and gardening professionals
NICKEL-CADMIUM (Ni-Cd) BATTERY
The second type of mower battery is the Nickel-Cadmium (Ni-Cd) battery. These batteries are more durable than lead-acid batteries. Ni-Cd batteries are mainly used with giant lawn mowers and are expensive to buy.
These are the batteries that are used in lawnmowers. If you want to buy a new battery, it is essential to check the compatibility of the battery with your mower so that it provides accurate power to your mower. Different mowers require different types of batteries.
TOP BATTERIES AVAILABLE IN MARKET
Due to competition in the market, almost all the top brands make their best product in very reasonable prices, when you are going to buy a new battery for your lawnmower you have a lot of options available in the market. The best-selling-top-brand batteries are:
Steps to Restore a Lawn Mower Battery
There are a few steps that may restore your weak battery. If your battery goes dead then it’s very difficult to recover and in a few cases, the battery gets exploded owing to high temperature. However, a weak battery can be restored by simply following a few easy steps. These steps are:
Note: Use of Personal Protective Equipment (PPEs):
Before starting work always wear Personal protective equipment like safety goggles, and safety gloves.
Removing of Battery:
The first step is to remove the battery from the lawn mower. While removing the battery note down the positive and negative polarities on the wire. If the indication for positive and negative is not right in the battery you might connect the battery in opposite polarity and it’s very dangerous. Note down the battery’s polarities before removing the battery.
Empty the battery:
The second step is to empty the battery from the old solution, clear all its plates and drain all the solution so that you start working on the restoration.
Cleaning of battery:
The third step is to clean the battery from the inside, for this purpose you may use baking soda with the distilled water. The baking soda will remove the sulfate and corrosion from battery plates. Mix the baking soda with distilled water and fill the battery with that solution. After two, or three hours clear the cleaning solution and drain all the solution from the battery. Also, rinse the battery with distilled water after clearing of solution (baking soda and distilled water)
Refilling of Battery:
Now refill the battery with the distilled water to the recommended level mentioned in the battery. If you have magnesium sulfate then you make a solution using magnesium sulfate with the distilled water.
Note: if you refill the battery with only distilled water there is no issue so don’t be confused about the magnesium sulfate
Charging of Battery:
Lastly, you can charge your battery as recommended by the manufacturer (Not more than 08 hours). After completion of charging you can wait for the cooling of battery plates. After cooling, install the battery into the mower and start using it.
Why Your Lawn Mower Battery Won’t Hold a Charge
There are several reasons behind the multifunctioning of the lawnmower battery. These reasons vary from case to case basis. However, a few major reasons for the failure of the lawn mower battery is as follows:
Low-quality battery:
The first and foremost reason behind the battery failure is the quality of the battery. Users buy less expensive and cheap lawn mowers which come up with low-quality batteries. Therefore, to avoid any hurdles, always buy a quality product so that you cannot face difficulty while working.
Expiry of shelf life:
Another important reason behind the battery failure is the expiry of battery life. Normally, users never do maintenance of the battery and use it continuously for years so battery life expires. Always check the battery after two-three months.
Corrosion:
Corrosion is also an important reason behind battery failure. The corrosion accumulation near the terminals and the cell opening due to which battery is not fully charged. Slowey and gradually the battery stopped working. It is very important to clean the battery terminals and also unplug the terminals wire from the battery and clean it carefully.
Decrease in the level of Solution:
Sometimes the level of distilled water/ solution decreases in the battery and its stops working. So always check the distilled water/solution level frequently to avoid any hurdle during the work.
Natural Sulfate Buildup:
When the battery discharges, sulfates can stick to the plates inside. Over time, these sulfates can crystallize and build up, which limits the battery’s ability to undergo necessary chemical reactions. Regular reconditioning can help prevent this buildup.
FREQUENTLY ASK QUESTIONS (FAQs):
CONCLUSION
In a nutshell, it is very clear that by following these steps your battery starts working and the life of your battery also extends. It is worth mentioning that be careful while working with the battery because it might be exploded if not connect the charger correctly or if both of the positive and negative terminals connect it might explode and also damage your face or other body parts. In the last, in case your battery is not working after doing these steps then you don’t try to install it on the mower and handed over the battery to the battery repairing shop for your safety. In case of any confusion, you may contact us so that a technical expert answer your query.

About Naveed A Hashmi
In my childhood, I used to see my parents while working in the land, for these reasons today I have been serving the same as our own tradition and culture. I thus love to stay in it, because I want to learn something advanced and new so that I may improve my farm’s contour and help others with my experience.