Why Electric Ride‑On Car Batteries Fail — And How to Prevent It

Electric ride‑on batteries need proper charging and storage. Our guide explains why they fail, how to test them, and how our 3‑month warranty applies.

A complete guide to battery care, testing, troubleshooting, and understanding our warranty

Electric ride‑on cars and bikes are incredibly popular, but the number‑one cause of performance issues is the battery. Whether a bike won’t charge, dies quickly, or stops working altogether, most faults can be traced back to battery condition, charging habits, or storage practices.

This guide explains why batteries go bad, how to test them, how to prevent early failure, and why our warranty covers 3 months — the industry standard for sealed lead‑acid (SLA) batteries used in children’s ride‑on vehicles.

🔋 How Ride‑On Batteries Work

Most electric ride‑on cars and bikes use sealed lead‑acid (SLA) batteries in 6V, 12V, or 24V formats. These batteries:

Provide steady power output
Require regular charging
Degrade naturally over time
Are sensitive to long periods of inactivity

A fully charged 12V SLA battery should read around 12.7V or higher. Readings significantly below this (e.g., under 10V) indicate deep discharge or permanent damage.

⚠️ Why Batteries Fail

The most common causes of battery failure include:

Infrequent charging — SLA batteries must be topped up regularly, even when not in use.
Long storage periods — Leaving a battery uncharged for weeks causes sulphation, permanently reducing capacity.
Cold storage — Low temperatures accelerate degradation.
Over‑discharging — Running the vehicle until it dies repeatedly shortens battery life.
Charger issues — A faulty charger prevents proper charging.

These issues are extremely common across all brands and retailers.

🧪 How to Test Your Battery

You can diagnose most battery problems at home using a voltmeter/multimeter:

Charge the battery for 8–12 hours.
Test the voltage:
- 12V battery: ~12.7V when healthy
- Low readings = damaged or deeply discharged
Check wiring connections for looseness or corrosion.
Test the charger by plugging it into the wall and checking indicator lights.
Inspect for overheating or swelling — signs of battery failure.

A multimeter is the most accurate way to confirm whether the battery or charger is at fault.

🛡️ Why Our Warranty Covers 3 Months

Our vehicles include a 3‑month warranty, excluding batteries. This is standard across the industry because:

SLA batteries are consumable components.
Their lifespan depends entirely on user charging habits, not manufacturing defects.
Incorrect storage or infrequent charging can damage a battery in as little as 2–4 weeks.
Manufacturers do not guarantee SLA batteries beyond short‑term use.

We follow the same warranty structure used by major ride‑on retailers and manufacturers.

🔧 Replacement Batteries for Your Ride‑On

If your battery has reached the end of its usable life, here are compatible replacement options:

Two Batteries For Ride On Car/Stairlifts 6V 7.5AH

12V Replace Lead-Acid Batteries Electric Powered Kids Ride On Car Battery Sealed Lithium Ion 12V 7Ah Battery

12V Replacement Lead-Acid Batteries Electric Powered Kids Ride On Car Battery Sealed Lithium Ion 12V 7Ah Battery

These products cover common 6V and 12V configurations used in most electric ride‑on cars and bikes.

Lithium Battery Ride‑On Bikes: What You Need to Know

While many children’s ride‑on vehicles use sealed lead‑acid (SLA) batteries, an increasing number of premium electric bikes now use lithium‑ion battery packs. These offer better performance, faster charging, and longer run‑times — but they also require proper care and can fail prematurely if not maintained correctly.

🔋 How Lithium Batteries Work

Lithium‑ion batteries store energy using lightweight lithium cells and an internal battery management system (BMS). This system protects the battery from overcharging, overheating, and deep discharge.

Lithium batteries typically provide:

Higher power output
Longer lifespan (when cared for properly)
Faster charging
Lower weight

However, they are more sensitive to misuse than SLA batteries.

⚠️ Why Lithium Batteries Fail

Lithium batteries can degrade or stop working for several reasons:

Deep discharge — letting the battery drain to 0% repeatedly can permanently damage the cells.
Long‑term storage without charging — lithium batteries slowly self‑discharge; if they drop too low, the BMS will lock the battery for safety.
Incorrect chargers — using non‑approved chargers can damage the BMS or cells.
Overheating — storing or charging in hot environments reduces lifespan.
Physical damage — drops or impacts can harm internal cells.

Lithium batteries are high‑performance components, but they are not immune to wear and require consistent care.

🧪 How to Test a Lithium Battery

Testing lithium batteries is slightly different from SLA batteries:

Charge the battery fully using the correct charger.
Check the charger indicator — most lithium chargers show red (charging) and green (charged).
Use a voltmeter to measure output:
- A 24V lithium pack typically reads between 25V–29V when healthy.
Check the BMS — if the battery shows 0V, the BMS may have shut down due to deep discharge.
Try a “wake‑up” charge — some lithium chargers can reactivate a BMS‑locked battery, but this is not guaranteed.
Inspect for swelling or heat damage — swollen lithium batteries must be replaced immediately.

If the BMS has locked the battery due to improper storage or deep discharge, this is not considered a manufacturing fault.

🛡️ Warranty Coverage for Lithium Batteries

Just like SLA batteries, lithium batteries are classified as consumable components. Their lifespan depends heavily on user charging habits and storage conditions.

For this reason, our warranty remains: