Batteries Rechargeable (Secondary)

Part Number	Description / PDF	Quantity
BGH-1255F2 BatteryGuy	12V 5.5AH HIGH RATE SLA BATTERY	998
BGN1100WP-0520EC BatteryGuy	1.2V 1000MAH NICAD BATTERY	1200
BGN800-2DWP-PRB830EC BatteryGuy	2.4V 900MAH NICAD BATTERY	800
BGN800-4EWP-41REC BatteryGuy	4.8V 900MAH NICAD BATTERY	1200
BGN2400 BatteryGuy	1.2V 2400MAH NICAD BATTERY 1/2D	300
BGN5500 BatteryGuy	1.2V 5500MAH NICAD BATTERY D	1000
BGN450-4EWP-PR326EC BatteryGuy	4.8V 450MAH NICAD BATTERY	1200
BG-1270F2 BatteryGuy	12V 7.0AH HIGH RATE SLA BATTERY	991
BGN5500-5FWP-A800EC BatteryGuy	6V 5500MAH NICAD BATTERY	150
BGN800-4EWP-500EC BatteryGuy	4.8V 900MAH NICAD BATTERY	1200
BGN800-4EWP-326EC BatteryGuy	4.8V 900MAH NICAD BATTERY	1200
BGN800-8BWP-500EC BatteryGuy	9.6V 900MAH NICAD BATTERY	1200
BGNMH2700-5DWP-5481MW BatteryGuy	6V 2700MAH NIMH BATTERY	399
BGN800-4EWP-PR600EC BatteryGuy	4.8V 900MAH NICAD BATTERY	300
BGN7000-10EWP-A800EC BatteryGuy	12V 7000MAH NICAD BATTERY	400
BGN800-5FWP-A800EC BatteryGuy	6V 900MAH NICAD BATTERY	400
BGN0300 BatteryGuy	1.2V 1200MAH NICAD BATTERY	400
BG-1270F1 BatteryGuy	12V 7.0AH HIGH RATE SLA BATTERY	992
BGN800-4EWP/3GWP-BW BatteryGuy	8.4V 1000MAH NICAD BATTERY	300
BGN1P201NB BatteryGuy	1.2V 1500MAH NICAD BATTERY	400

Batteries Rechargeable (Secondary)

1. Overview

Rechargeable batteries (secondary batteries) are electrochemical energy storage devices that can be repeatedly charged and discharged through reversible chemical reactions. Unlike primary batteries, they form the backbone of modern energy storage systems, enabling portable electronics, electric vehicles (EVs), and renewable energy integration. Their ability to reduce long-term costs and environmental impact makes them critical in sustainable technology development.

2. Main Types and Functional Classification

Type	Functional Characteristics	Application Examples
Lithium-ion (Li-ion)	High energy density (100-265 Wh/kg), low self-discharge, long cycle life (500-2000 cycles)	Smartphones, EVs, laptops
Nickel-Metal Hydride (NiMH)	Moderate energy density (60-120 Wh/kg), environmental friendliness, memory effect resistance	Hybrid vehicles, digital cameras
Lead-Acid	Low cost, high surge current capability, heavy weight	Automotive starters, backup power systems
Lithium Iron Phosphate (LiFePO4)	Exceptional thermal stability, long lifespan (2000+ cycles), lower energy density	Electric buses, solar storage, marine applications

3. Structure and Composition

Typical rechargeable battery cells consist of:

Cathode: Lithium cobalt oxide (LiCoO2) in Li-ion, Nickel oxyhydroxide (NiOOH) in NiMH
Anode: Graphite (Li-ion), Hydrogen-absorbing alloy (NiMH)
Electrolyte: Lithium salt in organic solvent (Li-ion), Potassium hydroxide (NiMH)
Separator: Microporous polymer membrane preventing short circuits
Current Collectors: Copper (anode), Aluminum (cathode)

Cell designs include cylindrical (18650 format), prismatic, and pouch configurations with integrated protection circuits.

4. Key Technical Parameters

Parameter	Description	Importance
Energy Density	Wh/kg or Wh/L	Determines runtime and weight
Charge Cycle Life	Number of full discharge/charge cycles	Dictates longevity and cost-effectiveness
Internal Resistance	Measured in milliohms	Affects power output and efficiency
Self-Discharge Rate	Monthly capacity loss percentage	Storage performance indicator
Charging Efficiency	Percentage of energy retained during charging	Impacts operational costs

5. Application Fields

Consumer Electronics: Smartphones, tablets, wearables
Transportation: EVs (Tesla Model 3), Hybrid vehicles (Toyota Prius)
Renewable Energy: Solar+storage systems (Tesla Powerwall)
Industrial: Forklifts, uninterruptible power supplies (UPS)
Military/Aerospace: UAVs, satellites

6. Leading Manufacturers and Products

Manufacturer	Representative Product	Chemistry Type
Panasonic	NCR18650B	Lithium-ion
BYD	Blade Battery	Lithium Iron Phosphate
Samsung SDI	INR18650-30Q	Nickel Cobalt Manganese (NCM)
Exide Technologies	Chloride SLA	Lead-Acid
LG Chem	LGDBHE21865	Lithium-ion Polymer

7. Selection Recommendations

Key considerations:

Energy Requirements: Calculate Wh needed for target runtime
Power Profile: Assess peak current demands (e.g., EV acceleration)
Environmental Conditions: Operating temperature range (-20 C to 60 C typical)
Cost Constraints: Balance upfront cost vs lifecycle value
Regulatory Compliance: UN38.3, IEC 62133 certifications

Example: Select LiFePO4 for solar storage systems requiring 5000+ cycles and wide temperature tolerance.

8. Industry Trends

Material Innovation: Silicon anodes (20%+ capacity increase), solid-state electrolytes
Fast Charging: 0-80% in 15 minutes (e.g., Tesla 4680 cells)
Recycling: EU Battery Passport regulations driving closed-loop systems
Market Growth: 12.6% CAGR projected through 2030 (Grand View Research)
AI Integration: Smart BMS (Battery Management Systems) optimizing charge cycles