Batteries Rechargeable (Secondary)

Part Number	Description / PDF	Quantity
BG-2412 BatteryGuy	24V 12AH SLA BATTERY	300
BGN1000WP-326EC BatteryGuy	1.2V 1000MAH NICAD BATTERY	398
BGNB001 BatteryGuy	3.6V 900MAH NICAD BATTERY	1200
BGN5000B BatteryGuy	1.2V 5000MAH NICAD BATTERY	399
BGNMHAA2100 BatteryGuy	1.2V 2100MAH NIMH BATTERY AA	90
BGN3500 BatteryGuy	1.2V 1200MAH NICAD BATTERY	1200
BGN1100AEL BatteryGuy	1.2V 1100MAH NICAD BATTERY 4/5A	800
BG-645F1 BatteryGuy	6V 4.5AH SLA BATTERY	2990
BGN800-4EWP-B830EC BatteryGuy	4.8V 900MAH NICAD BATTERY	300
BGN800-4EWP-A800EC BatteryGuy	4.8V 900MAH NICAD BATTERY	300
BGN1800-5DWP-A800EC BatteryGuy	6V 1800MAH NICAD BATTERY	398
BGH-690F2 BatteryGuy	6V 9.0AH HIGH RATE SLA BATTERY	94
BG-1212F1 BatteryGuy	12V 1.2AH SLA BATTERY	38
BGN350 BatteryGuy	1.2V 350MAH NICAD BATTERY AAA	400
BGN800-3DWP-41REC BatteryGuy	3.6V 900MAH NICAD BATTERY	500
BGN800-4EWP-PRB830EC BatteryGuy	4.8V 900MAH NICAD BATTERY	1200
BGNMHAAA750 BatteryGuy	1.2V 750MAH NIMH BATTERY AAA	300
BGN800-4EWP-PR326EC BatteryGuy	4.8V 900MAH NICAD BATTERY	1197
BGN800 BatteryGuy	1.2V 900MAH NICAD BATTERY AA	1000
BG-1224B BatteryGuy	12V 24AH SLA BATTERY	299

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