Ingco FBLI2003 20V 5.0Ah P20S Battery

The Ingco 20V 5.0Ah lithium-ion battery pack is a high-capacity power solution designed for Ingco 20V (P20S) cordless tools.

Built for longer runtimes and demanding applications, this battery is ideal for trade users and DIYers who want fewer interruptions and consistent power delivery. Features LED battery power indicator, intelligent protection systems, and balance charge technology for maximum performance and durability.

Key benefits

• Compatible with all Ingco 20V (P20S) cordless tools - one battery fits 150+ tools
• 5.0Ah (100Wh) ultra-high capacity for maximum extended runtime - 2.5× longer than 2.0Ah
• LED battery power indicator displays real-time charge status
• Intelligent protection: over-discharge, over-heating, overload, over-voltage, and overcharge protection
• Balance charge technology for extended battery lifespan and optimal performance
• No memory effect - charge anytime without capacity loss
• Fast charging: fully charges in approximately 2-2.5 hours with Ingco 2A charger (FCLI20013)
• High-quality lithium-ion cells provide longer runtime and increased power output
• Longer lasting and better performance than 2.0Ah, 2.5Ah, and 4.0Ah batteries
• Low self-discharge - battery stays ready to use even after storage
• Steady, consistent power output throughout entire discharge cycle
• Ideal for high-demand tools like circular saws, angle grinders, and reciprocating saws
• Significantly reduces downtime from battery changes on job sites
• Suitable for professional trade and heavy-duty DIY use
• Universal P20S compatibility provides versatility across entire tool lineup

Best for

• Powering Ingco 20V cordless tools for maximum extended periods
• Heavy-duty cutting, grinding, and sanding tasks requiring sustained power
• Extended drilling and driving applications
• Professional trade work and all-day site operations
• Demanding DIY projects with minimal interruptions
• High-demand power tools (circular saws, angle grinders, reciprocating saws)
• Remote job sites where charging access is severely limited
• Continuous operation applications requiring maximum runtime
• Tasks where battery weight is secondary to runtime priority
• Users needing absolute maximum runtime between charges
• Reducing battery changeovers to absolute minimum for productivity

Key features – why it matters

• 20V P20S platform compatibility: designed specifically for Ingco P20S cordless tool system - compatible with 150+ tools including drills, impact drivers, circular saws, jigsaws, reciprocating saws, angle grinders, sanders, polishers, blowers, grass trimmers, multi-tools, impact wrenches, and more - one battery system powers your entire professional tool collection
• 5.0Ah (100Wh) ultra-high capacity: provides 2.5× the runtime of 2.0Ah batteries and 25% more than 4.0Ah - delivers 100 watt-hours of energy for maximum extended work sessions - ideal for the most demanding heavy-duty applications requiring sustained power without interruption - dramatically reduces downtime and battery changeovers for maximum productivity
• LED battery power indicator: real-time visual display shows remaining charge level at a glance - typically displays multiple charge levels for accurate monitoring - enables proactive battery management and timely charging before complete depletion - improves work efficiency by eliminating guesswork about remaining runtime
• Comprehensive Intelligent Battery Management System (BMS): advanced protection circuitry safeguards battery from over-discharge (deep discharge prevention), over-heating (thermal shutdown during excessive temperature), overload (excessive load protection), over-voltage (charging spike protection), and overcharge (prolonged charging protection) - significantly extends battery lifespan, ensures safe operation in demanding conditions, and enhances long-term durability and reliability
• Balance charge technology: sophisticated charging algorithm ensures all internal lithium-ion cells charge evenly to identical voltage levels - prevents cell imbalance that causes premature battery failure and reduced performance - maximizes battery lifespan (more charge cycles), maintains consistent performance throughout battery's service life, and ensures optimal power delivery
• No memory effect: advanced lithium-ion technology allows charging at any state of discharge without reducing capacity, performance, or lifespan - no need to fully discharge before recharging - provides ultimate charging flexibility and convenience for professional workflows - charge during breaks, between jobs, or whenever convenient
• Fast 2-2.5 hour charging: fully recharges in approximately 2-2.5 hours using compatible Ingco 20V 2A fast charger (FCLI20013, sold separately) - despite highest capacity in the P20S lineup, still charges efficiently to minimize downtime and maintain productivity
• High-quality lithium-ion cells: premium cell construction delivers longer runtime, increased power output, and superior reliability compared to standard battery packs - maintains consistent 20V voltage from full charge to final watt - ensures optimal tool performance, maximum torque, and smooth operation throughout entire discharge cycle
• Low self-discharge rate: advanced lithium-ion technology minimizes power loss during storage - battery stays ready to use even after weeks or months of storage - always prepared for immediate use when needed
• Steady power output: maintains consistent voltage delivery ensuring optimal motor efficiency, maximum tool torque, smooth operation across all applications, and no power fade until battery is nearly completely depleted
• Longer lasting performance: superior to 2.0Ah, 2.5Ah, and 4.0Ah batteries in both runtime capacity and operational lifespan - better long-term value for professional users requiring maximum reliability
• Universal P20S compatibility: single battery fits all P20S multiple tools - provides exceptional versatility, cost-effectiveness, and convenience by eliminating need for multiple battery types
• Durable construction: robust impact-resistant ABS plastic housing withstands demanding work environments including both indoor workshop and outdoor job site conditions
• Professional-grade reliability: engineered for intensive daily use in trade applications where consistent performance and extended runtime are absolutely critical

Specifications

What's included

• 1 × Ingco 20V 5.0Ah lithium-ion battery pack (FBLI2003)
• User manual and safety instructions
• Color box packaging
• Note: Charger sold separately

How to use

• Check battery charge: Press the LED battery power indicator button to check remaining charge level before starting work. The LED display will show current charge status (typically multiple levels indicating high, medium, low charge). Charge if needed to avoid mid-task interruption.
• Insert into tool: Align the 5.0Ah battery pack with the battery port on your compatible Ingco 20V P20S cordless tool. Slide the battery firmly onto the tool until you hear/feel a distinct click, indicating secure lock engagement.
• Ensure secure connection: Verify the battery is firmly locked in place and properly seated with full contact - a loose connection can cause tool malfunction, reduced performance, power interruption, or safety issues during operation.
• Operate tool normally: Use your Ingco 20V cordless tool as directed in the tool's user manual. The 5.0Ah ultra-high capacity provides maximum extended runtime for the most demanding heavy-duty applications, dramatically reducing the need for frequent battery changes during prolonged all-day work sessions.
• Monitor charge level: Periodically check the LED indicator during use to monitor remaining power. The 5.0Ah capacity provides significantly longer runtime, but monitoring ensures you're aware of status and can plan for battery changes or recharging.
• Remove when depleted: When the battery is depleted or tool performance decreases noticeably (reduced speed/torque), press the battery release button/latch and slide the battery off the tool.
• Recharge using compatible charger: Insert the depleted battery onto an Ingco 20V P20S charger (FCLI20013 or similar, sold separately). The 5.0Ah battery will fully charge in approximately 2-2.5 hours with a 2A fast charger - longer than lower-capacity batteries but provides maximum runtime for the investment.
• Remove when not in use: Always remove the battery from the tool when not in use, during maintenance, when changing accessories, or when storing the tool. This prevents accidental starts, conserves battery charge, and enhances safety.
• Rotate multiple batteries: For continuous all-day heavy-duty operation, use a battery rotation system - charge spare batteries (5.0Ah or mix with 4.0Ah/2.0Ah) while working with others to maintain completely uninterrupted workflow on demanding professional job sites.
• Store properly: Store batteries in a cool, dry place (10-25°C) away from metal objects that could cause short circuits. Maintain partial charge (40-60%) for long-term storage to maximize battery health and lifespan.

Care & maintenance

• Store in a cool, dry environment away from direct sunlight and extreme temperatures (ideally 10-25°C).
• Avoid exposure to moisture, water, rain, snow, and wet conditions - the battery is not waterproof or water-resistant.
• Keep battery contacts clean and free from dust, debris, oil, grease, and corrosion for proper electrical connection and optimal performance.
• Recharge periodically during long-term storage (charge every 2-3 months minimum) to prevent deep discharge damage that can permanently reduce capacity.
• For long-term storage (several months), maintain charge level at 40-60% rather than fully charged or fully depleted for maximum battery health.
• Do not store fully depleted batteries for extended periods - this can cause irreversible cell damage and permanent capacity loss.
• Avoid dropping or subjecting battery to severe impact, shock, or vibration, even though housing is impact-resistant.
• Do not expose battery to extreme heat, fire, direct flame, or temperatures above 50°C - serious risk of thermal runaway, fire, and explosion.
• Do not attempt to disassemble, modify, open, or repair the battery - contains no user-serviceable parts and tampering voids warranty and creates safety hazards.
• Check battery periodically for physical damage, swelling, bulging, leaking, deformation, cracks, or unusual odor - discontinue use immediately if any damage is observed.
• Do not short-circuit battery terminals - keep away from metal objects like keys, coins, nails, screws, tools, jewelry that could bridge terminals.
• Charge only with compatible Ingco 20V P20S chargers (FCLI20013 or similar) - using incorrect chargers, universal chargers, or other brands can damage battery or create serious safety hazards including fire.
• Allow hot batteries to cool to room temperature before charging for optimal charging efficiency, battery longevity, and safety.
• Clean battery exterior with dry cloth only - never use water, solvents, abrasives, or harsh chemicals that could damage housing or contacts.
• Monitor LED indicator during use - erratic behavior, failure to light, or unusual patterns may indicate battery issues requiring inspection or replacement.
• Dispose of worn-out, damaged, or end-of-life batteries properly at designated battery recycling facilities - lithium-ion batteries are classified as hazardous waste and must not be discarded in regular household waste.
• Transport batteries safely - avoid crushing, puncturing, or exposing to extreme conditions during transport.
• Respect battery's weight (600g) during handling, tool use, and storage - heavier than lower-capacity batteries but weight is distributed for balance.

Accessories & add-ons

• Ingco 20V 2A fast battery charger (FCLI20013) - charges in 2-2.5 hours
• Additional Ingco 20V 5.0Ah batteries (FBLI2003) for extended runtime rotation systems
• Ingco 20V 4.0Ah lithium-ion batteries (FBLI2002) for heavy-duty applications
• Ingco 20V 2.0Ah lithium-ion batteries (FBLI2001) for lightweight applications
• Battery and charger kits (various combinations for convenience and value)
• Battery storage cases and organizers for multiple battery management
• Ingco 20V P20S cordless power tools (full range of professional tools)
• Tool storage systems, toolboxes, and professional carrying cases

Delivery & returns

Free UK delivery on orders over £50. 28-day returns apply.

Why buy from London Decorators Merchants

• Independent, family-owned business
• 16 decorating stores nationwide
• Trade-friendly service and support
• UK stock with fast dispatch
• Trade account available
• Expert advice on Ingco battery systems
• Professional tool support

Shop now or visit our branch for trade advice.

FAQs

Which tools is this battery compatible with?

This battery is compatible with all Ingco 20V tools using the P20S battery system - over 150 different tools including cordless drills, impact drivers, circular saws, jigsaws, reciprocating saws, angle grinders, orbital sanders, polishers, blowers, grass trimmers, multi-tools, impact wrenches, rotary hammers, and many more. One battery fits the entire P20S platform, providing a universal power solution across your entire professional Ingco cordless tool collection.

What does 5.0Ah mean?

5.0Ah (ampere-hours) refers to the battery capacity - it means the battery can theoretically deliver 5.0 amps of current for 1 hour, or 2.5 amps for 2 hours, etc. This 5.0Ah capacity (100Wh energy) provides 2.5× the runtime of 2.0Ah batteries and 25% more than 4.0Ah, making it the highest-capacity option in the P20S lineup. It's ideal for the most demanding heavy-duty, extended applications requiring maximum runtime with minimal interruptions.

Is this suitable for trade use?

Yes, the ultra-high 5.0Ah capacity makes it exceptionally suitable for professional trade, commercial applications, and intensive industrial use. The maximum extended runtime (2.5× that of 2.0Ah, 25% more than 4.0Ah), comprehensive intelligent protection systems (over-discharge, over-heating, overload, over-voltage, overcharge), balance charge technology, fast 2-2.5 hour charging, low self-discharge, and durable construction make it the preferred choice for professional tradespeople requiring absolute maximum runtime and reliability throughout all-day demanding work.

Does it include a charger?

No. This listing is for the battery pack only. The compatible Ingco 20V 2A fast charger (FCLI20013) is sold separately and must be purchased if you don't already have a compatible P20S charger. Battery and charger kits combining both items are also available for convenience and value.

Can I use this instead of a 2.0Ah or 4.0Ah battery?

Yes, the 5.0Ah battery can replace and upgrade any lower-capacity Ingco 20V batteries (2.0Ah, 2.5Ah, 4.0Ah) where maximum longest runtime is required. It's fully compatible with all P20S tools. The main differences are significantly extended runtime (2.5× longer than 2.0Ah, 25% longer than 4.0Ah) and slightly increased weight (600g vs 400g for 2.0Ah, vs 680g for 4.0Ah). For the most demanding heavy-duty tasks requiring sustained all-day power, the 5.0Ah is the ultimate choice.

How long does it take to charge?

The 5.0Ah battery charges in approximately 2-2.5 hours when using a compatible Ingco 20V 2A fast intelligent charger (FCLI20013, sold separately). This is longer than 2.0Ah (1 hour) and 4.0Ah (2 hours) batteries but provides maximum runtime - the highest capacity available in the P20S system. Charging time may vary slightly based on battery condition, ambient temperature, and specific charger model.

Is it compatible with all Ingco chargers?

It is compatible with chargers designed specifically for the Ingco 20V P20S battery platform, including the FCLI20013 (2A fast charger) and other P20S-compatible chargers. Do not use chargers from different voltage platforms (12V, 18V, 40V), universal chargers not rated for P20S, or other brands, as incorrect chargers can damage the battery or create serious safety hazards including fire, overheating, and reduced battery life. Always verify charger compatibility and voltage rating before use.

Do you sell other battery sizes?

Yes. Ingco 20V P20S batteries are available in multiple capacities: 2.0Ah (FBLI2001) for lightweight applications and portability, 4.0Ah (FBLI2002) for extended runtime and heavy-duty work, and 5.0Ah (FBLI2003) for maximum runtime and the most demanding professional applications. Choose based on your priority: 2.0Ah for lightness, 4.0Ah for balanced heavy-duty use, or 5.0Ah for absolute maximum runtime.

How much longer will this battery last compared to other capacities?

The 5.0Ah battery provides approximately 2.5× (250%) the runtime of 2.0Ah batteries and approximately 1.25× (125%) the runtime of 4.0Ah batteries in the same tool under identical conditions. For example, if a 2.0Ah battery provides 20 minutes of continuous cutting, the 5.0Ah will provide approximately 50 minutes. If a 4.0Ah provides 40 minutes, the 5.0Ah will provide approximately 50 minutes. Actual runtime depends on specific tool, application intensity, load, and operating conditions.

Is the battery heavier than lower-capacity batteries?

The 5.0Ah battery weighs 600g, compared to approximately 400g for 2.0Ah batteries and 680g for 4.0Ah batteries. Interestingly, the 5.0Ah is actually slightly lighter than the 4.0Ah (600g vs 680g) while providing 25% more capacity - representing excellent power-to-weight ratio. The modest weight makes the 5.0Ah an excellent choice even for extended use where the maximum runtime justifies the weight.

What is balance charge technology?

Balance charge technology is a sophisticated charging algorithm that ensures all internal lithium-ion cells (typically 5-10 cells in series) charge evenly to identical voltage levels. This prevents cell imbalance where some cells are more charged than others, which causes premature battery failure, reduced capacity, shortened lifespan, and safety issues. By maintaining perfectly balanced cells, this technology maximizes battery lifespan (significantly more charge cycles), maintains consistent optimal performance throughout the battery's service life, and ensures maximum power delivery and reliability for professional applications.

What happens if the battery overheats?

If the battery detects excessive temperature during use or charging (typically above safe operating limits around 60-70°C), the over-heating protection system will automatically shut down the battery to prevent cell damage, thermal runaway, and safety hazards. The LED indicator may flash or display a warning. Allow the battery to cool completely to room temperature in a well-ventilated area away from flammable materials before resuming use or charging. Persistent overheating may indicate excessive sustained tool load, inadequate ventilation, high ambient temperatures, or battery issues requiring professional inspection.

Can I charge the battery before it's fully depleted?

Yes, absolutely. Thanks to the no memory effect of advanced lithium-ion technology, you can charge the battery at any state of discharge without reducing its capacity, performance, or lifespan. Unlike older battery technologies (Ni-Cd, Ni-MH), you don't need to fully discharge before recharging. This provides ultimate charging flexibility for professional workflows - charge during lunch breaks, coffee breaks, between jobs, overnight, or whenever convenient without worrying about capacity loss or reduced performance.

What is the advantage of 5.0Ah over 4.0Ah?

The 5.0Ah provides 25% more runtime than 4.0Ah (50 minutes vs 40 minutes in typical use) while actually weighing slightly less (600g vs 680g) - superior power-to-weight ratio. This makes it ideal for users who need absolute maximum runtime to minimize battery changes throughout demanding all-day work. The charging time difference is minimal (2-2.5 hours vs 2 hours). Choose 5.0Ah for maximum runtime priority, or 4.0Ah for slightly faster charging if 25% less runtime is acceptable.

How should I maintain the battery for professional daily use?

For professional daily use: charge fully before first use; maintain multiple batteries in rotation (use one while charging another); recharge promptly after depletion rather than storing depleted; store at room temperature (10-25°C) in dry conditions; clean contacts monthly; monitor LED indicator for performance issues; avoid complete depletion when possible (recharge at 10-20%); charge overnight for ready morning use; label batteries with purchase dates to track age and rotation; inspect regularly for damage; replace batteries showing reduced runtime or performance degradation after 2-3 years of intensive use.

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