How to Revive Dead Batteries and Fix Lithium Batteries that Won’t Charge？

By Ufine, Updated on August 14, 2025

Share the page to

Staring at a dead lithium-ion battery that refuses to charge? Before buying a replacement, you can try to revive it safely. This guide explains how to revive a dead battery, fix lithium-ion batteries that won’t charge, troubleshoot common lithium battery issues, and maximize battery lifespan.

Part 1. Causes of dead batteries

Overcharging: Leaving devices plugged in for long periods can damage lithium-ion batteries, causing them to lose capacity or fail to charge.
High Temperatures: Heat accelerates chemical reactions, degrading lithium battery health and creating battery will not charge issues.
Deep Discharge: Allowing batteries to fully drain before recharging can reduce lifespan and cause flat lithium ion battery problems.
Physical Damage: Dropping or mishandling can lead to internal short circuits, leaks, or completely dead batteries.
Age and Wear: Batteries degrade with repeated charge cycles, leading to decreased capacity and potential lithium ion battery charger not working.
Manufacturing Defects: Defective cells may fail prematurely, causing battery repair needs or dead battery conditions.
Software Glitches: Device software may incorrectly report battery levels or prevent proper charging.
Low Voltage Conditions: Running batteries under low voltage stress can irreversibly damage lithium cells.
Improper Storage: Extreme temperature or humidity can accelerate degradation, leading to empty battery issues.
Non-Optimal Charging Practices: Using incompatible chargers may cause overcharge or undercharge, resulting in lithium battery issues.

Part 2. Quick steps to revive a dead lithium-ion battery

Quick Steps to Revive a Dead Lithium-Ion Battery:

Connect to the original charger for 12–24 hours to attempt recovery
Check charging cables, ports, and power sources to fix lithium battery issues
Allow cold batteries to reach room temperature before charging
Use a battery reconditioner for deeply discharged cells

Safety Note: Avoid freezing or forced overcharging, as these can permanently damage lithium-ion batteries.

Part 3. Safe & risky methods to revive a lithium-ion battery

Reviving a dead battery requires caution. Prioritize safe methods before considering risky options:

Safe Methods to Try First

1. Recharge the Battery (Patience is Key)

The simplest way to revive a dead battery is to recharge it. Connect to the correct charger for an extended period (12-24 hours). Use original chargers when possible. This is the most fundamental step in reviving a dead battery.

2. Use a Battery Reconditioner/Recovery Charger

Battery reconditioners apply specialized cycles to restore deeply discharged batteries. They’re the most reliable tools for reviving a dead battery without damage.

3. Warm Up the Battery

If cold, let batteries warm naturally to room temperature. Avoid direct heat sources which may damage cells.

4. Check Connections & Reset

Clean charging ports/cables with isopropyl alcohol. Try different outlets/cables. Perform device hard resets.

Controversial & Risky Methods (Not Recommended)

5. The Freeze Method (High Risk)

Expert Warning: Freezing lithium batteries is widely discouraged due to:

Moisture damage from condensation
Physical stress from temperature changes
Permanent capacity reduction
Fire risk when thawing

If attempted: Double-seal in airtight bags, freeze max 2-3 hours, thaw completely before charging.

6. Jump-Starting Lithium Batteries

Only applicable to car lead-acid batteries. Requires professional equipment for lithium cells and can cause permanent damage.

7. Controlled Overcharge (Extreme Hazard)

Can cause thermal runaway and explosions. Only for professionals with safety equipment.

Part 4. How to fix a lithium-ion battery that won’t charge

Check Charging Hardware for Lithium-Ion Battery: Inspect cables, clean ports with isopropyl alcohol, and test different chargers/outlets.
Hard Reset to Fix Lithium Battery Issues: Power off device, remove battery (if possible), hold power button 30 seconds, reinsert battery, and recharge.
Reset Battery Management System: Fully discharge and charge uninterrupted to 100% to cycle the internal controller.
Diagnose Physical Issues: Look for swelling, leaks, or damage. Older batteries may be beyond revival.
Professional Testing: Battery specialists can determine if the issue is with the battery, charging circuit, or device.
Battery Replacement: When revival fails, replace with OEM batteries; avoid cheap alternatives.

Critical Safety Notice: Avoid freezing or forced overcharging—these often cause permanent damage.

Part 5. How long can a lithium-ion battery last without charging?

Self-Discharge Rate

Lithium-ion batteries naturally lose charge over time, even when not in use. The self-discharge rate differs between battery models but is generally low. On average, a lithium-ion battery can retain approximately 80% of its charge after one month of inactivity.

Battery Capacity

The battery’s initial capacity also plays a role. Higher-capacity batteries tend to retain their charge for longer periods than lower-capacity ones. However, the self-discharge rate remains a factor, regardless of the battery’s capacity.

Part 6. Importance of battery maintenance

Prevent dead batteries with these essential maintenance practices:

Battery Maintenance Checklist

Charge Smart: Keep between 20-80% for daily use
Temperature Control: Avoid exposure to temperatures above 35°C/95°F
Use Approved Chargers: Only use manufacturer-certified charging equipment
Storage Protocol: Maintain 40-60% charge in cool, dry environments
Regular Usage: Exercise batteries monthly if stored long-term

Key Benefits of Proper Maintenance

Prevents Premature Failure
Eliminates common causes of dead batteries including deep discharge and thermal damage
Extends Service Life
Properly maintained lithium-ion batteries last 2-3x longer than neglected units
Ensures Reliable Performance
Maintained batteries deliver consistent capacity and stable voltage output
Cost Efficiency
Saves 60-80% on replacement costs over the device’s lifetime
Environmental Protection
Reduces hazardous waste by minimizing battery replacements

Essential Maintenance Guides

Part 7. FAQs about reviving dead batteries

Can you really revive a dead lithium-ion battery that won’t charge?

Sometimes yes, but not always. If the battery is deeply discharged but not physically damaged, long recharge or using a battery reconditioner may work. Old or damaged batteries usually need replacement.

Is freezing a lithium battery safe for revival?

No. Freezing carries high risks including moisture damage, physical stress, reduced capacity, and potential fire or leaks. Use safer alternatives like reconditioners.

How long should I try charging a dead battery before giving up?

Charge on the correct charger for at least 12–24 hours. If the device shows no sign of life, check connections and try another charger/cable before concluding it cannot be revived.