📖 Click to view full specifications, comparison & safety guide
Rechargeable D Batteries – Large-Format High-Capacity Cylindrical Cells, The Enduring Power Core for High-Drain Devices
Welcome to our Rechargeable D Batteries collection. The D battery (IEC standard R20, approx. 33–34mm diameter × 61mm length) is one of the largest mainstream cylindrical battery formats[reference:21]. Thanks to its substantial internal volume, a D cell can store far more electrochemical energy than AA or C batteries—purpose-built for high-drain devices that demand extended, uninterrupted power[reference:22]. This collection brings together the full spectrum of rechargeable D cells, spanning Nickel-Metal Hydride (NiMH) and Lithium-ion (Li-ion) chemistries with capacities from 2500mAh to over 12000mAh. They are the ideal power upgrade for high-lumen flashlights, emergency lanterns, portable radios/boomboxes, electric toys, gas water heaters, medical devices, and various industrial testing instruments[reference:23][reference:24].
Core Advantages of Rechargeable D Batteries
- Massive Capacity, Extended Runtime: Mainstream rechargeable D batteries deliver capacities from 2500mAh to 12000mAh+. A single cell provides hours—even tens of hours—of continuous power for high-drain devices, dramatically reducing battery replacement frequency[reference:25][reference:26].
- Rechargeable – Economical & Eco-Friendly: Supports 500–2,000+ charge/discharge cycles. Over its service life, one rechargeable D cell can replace dozens or even hundreds of disposable alkaline batteries—slashing long-term costs and significantly reducing battery waste[reference:27][reference:28].
- Flexible Chemistry Options: Available in both NiMH and Li-ion formulations. NiMH offers moderate cost and broad compatibility; Li-ion delivers higher energy density, lighter weight, and lower self-discharge[reference:29].
- Stable Voltage Output: NiMH cells maintain voltage better under heavy load than alkalines. Li-ion D cells with built-in voltage regulation can sustain a constant 1.5V output for over 95% of their discharge cycle—ensuring consistent device performance from start to finish[reference:30][reference:31].
- Low Self-Discharge – Always Ready: Premium rechargeable D batteries feature exceptionally low self-discharge rates. They retain ample charge after months—even a year—of storage, making them perfect for emergency backup and seasonal-use devices[reference:32].
- USB-C Convenient Charging (Li-ion Models): An increasing number of Li-ion D cells integrate a USB-C charging port. Recharge anywhere using a phone charger or power bank—no dedicated charger required[reference:33][reference:34].
Rechargeable D Battery Category Guide
| Category | Positioning | Nominal Voltage | Typical Capacity | Best For |
|---|---|---|---|---|
| NiMH Rechargeable D | Economical, reliable, widely compatible | 1.2V | 2500mAh – 10000mAh | Household electronics, electric toys, emergency lighting, medical devices |
| Li-ion Rechargeable D | High energy density, lightweight | 1.5V (regulated) / 3.7V | 3000mAh – 12000mAh | Premium flashlights, professional gear, outdoor equipment, industrial instruments |
Rechargeable D Batteries vs. Disposable Alkaline D Batteries
| Parameter | Rechargeable D (NiMH/Li-ion) | Disposable Alkaline D |
|---|---|---|
| Nominal Voltage | 1.2V (NiMH) / 1.5V (regulated Li-ion) | 1.5V |
| Typical Capacity | 2500mAh – 12000mAh | 12000mAh – 20000mAh |
| Rechargeable | ✅ Yes (500–2,000+ cycles) | ❌ No |
| Voltage Stability Under Load | Excellent (maintains voltage better) | Declines steadily as battery discharges |
| Weight | NiMH heavier; Li-ion lighter | Moderate |
| Long-Term Cost | Very low (pennies per use) | Higher (frequent replacement required) |
| Best For | Frequently used high-drain devices | Infrequent or low-power use |
Popular Rechargeable D Cell Models – Quick Reference
| Model | Brand | Chemistry | Nominal Capacity | Nominal Voltage | Key Features |
|---|---|---|---|---|---|
| EBL 10000mAh D | EBL | NiMH | 10000mAh | 1.2V | High-capacity NiMH; top choice for consumer electronics |
| Ansmann 10000mAh D | Ansmann | NiMH | 10000mAh | 1.2V | German brand, high reliability |
| Tenergy Centura D | Tenergy | NiMH (LSD) | 8000mAh | 1.2V | Low self-discharge; ready to use out of the pack |
| Powerex D | Powerex | NiMH | 10000mAh | 1.2V | Professional-grade; industrial applications |
| Ansmann Li-Ion D 6000 | Ansmann | Li-ion | 6000mAh | 1.5V regulated | USB-C charging; built-in safety circuit |
| PKCELL USB D 7400mWh | PKCELL | Li-ion | 7400mWh | 1.5V regulated | USB rechargeable; industrial-grade, 300+ cycles |
| BESTON D 6660mWh | BESTON | Li-ion | 6660mWh | 1.5V regulated | USB-C direct charging; 1.5V/2A Max output |
| Delipow D 12000mWh | Delipow | Li-ion | 12000mWh | 1.5V regulated | Ultra-high capacity; USB-C fast charging |
Typical Specifications Range (Rechargeable D Batteries)
| Parameter | NiMH Rechargeable D | Li-ion Rechargeable D |
|---|---|---|
| Nominal Voltage | 1.2V | 1.5V (regulated) / 3.7V (bare cell) |
| Capacity Range | 2500mAh – 10000mAh | 3000mAh – 12000mAh (equivalent) |
| Cycle Life | 500 – 1000 cycles | 1000 – 2000+ cycles |
| Self-Discharge | 15–25% per year (LSD types lower) | Very low (2–3% per month) |
| Operating Temperature | -10°C ~ 60°C | -20°C ~ 60°C |
| Dimensions (Dia. × Length) | ~33–34mm × 61mm | ~33–34mm × 61mm |
| Weight | ~160g–180g | ~100g–120g |
Typical Applications
| Application | Recommended Category | Suggested Models |
|---|---|---|
| High-lumen flashlights / emergency lanterns | NiMH High-Capacity / Li-ion regulated | EBL 10000mAh, Ansmann Li-Ion D |
| Portable radios / boomboxes / cassette players | NiMH High-Capacity | Tenergy Centura, EBL 10000mAh |
| Electric toys / ride-on vehicles | NiMH High-Capacity | Powerex D, Ansmann 10000mAh |
| Gas water heaters / gas stove igniters | Li-ion regulated | BESTON D, Delipow 12000mWh |
| Medical devices / patient monitors | NiMH High-Reliability / Li-ion | Ansmann 10000mAh, PKCELL USB D |
| Industrial inspection / data loggers | Li-ion regulated | PKCELL USB D |
| Outdoor camping / emergency kits | NiMH LSD (low self-discharge) | Tenergy Centura |
| Security cameras / smart door locks | Li-ion regulated | Ansmann Li-Ion D |
How to Choose the Right Rechargeable D Battery?
| Your Requirement | Recommended Category | Suggested Model |
|---|---|---|
| I need an economical option compatible with most household devices | NiMH High-Capacity | EBL 10000mAh, Tenergy Centura |
| I need the lightest weight and longest runtime | Li-ion Regulated | Delipow 12000mWh, Ansmann Li-Ion D |
| I need ready-to-use, low self-discharge for emergency backup | NiMH LSD | Tenergy Centura |
| I want convenient USB charging without a dedicated charger | Li-ion USB-C Direct Charge | Ansmann Li-Ion D, PKCELL USB D |
| I need professional-grade reliability for industrial/medical use | NiMH Professional / Li-ion Industrial | Powerex D, PKCELL USB D |
| I need bulk quantities or custom packs | Contact our sales team | — |
⚠️ Rechargeable D Battery Safety Guidelines
- Voltage Compatibility – Do Not Mix: NiMH (1.2V) and Li-ion (1.5V/3.7V) batteries have different voltage platforms. Do not mix them in the same device, and do not use the same charger for both chemistries. Always verify device and charger compatibility.
- Use the Correct Charger: NiMH D cells require a NiMH-specific charger. Li-ion D cells should be charged via their integrated USB port or a dedicated Li-ion charger. Never use an alkaline battery charger for rechargeable batteries.
- Avoid Overcharge and Over-Discharge: Use smart chargers to prevent overcharging. Recharge promptly when device performance noticeably drops to avoid deep discharge damage.
- Avoid Short Circuits and Overheating: Do not short the positive and negative terminals. Keep away from heat, moisture, and metal objects. Due to their large capacity, short-circuiting D cells can cause serious safety incidents.
- Do Not Mix Old and New Batteries: In multi-cell devices, always use batteries of the same brand, model, and charge level. Mixing old and new cells accelerates aging.
- Long-Term Storage: Store at 40%–60% charge in a cool, dry location. Recharge every 6–12 months to maintain battery health.
- Recycle Responsibly: Dispose of used batteries at designated recycling facilities. Never incinerate or discard in household trash.
Why Choose Our Rechargeable D Batteries?
- Genuine Brand-Name Products: Sourced from EBL, Ansmann, Tenergy, Powerex, PKCELL, BESTON, and other reputable domestic and international brands. No counterfeits or exaggerated capacity claims.
- Fully Tested: Every batch undergoes capacity, internal resistance, and voltage verification to ensure consistent, reliable quality.
- Complete Portfolio: Covers NiMH high-capacity, NiMH low self-discharge, and Li-ion regulated USB direct-charge series—one-stop shopping for all D-cell needs.
- Flexible Purchasing: Single-cell retail, 2-pack, 4-pack, 8-pack options, and bulk wholesale pricing available.
- Compatible Chargers Available: We also offer NiMH-specific chargers and multi-format universal chargers for convenient one-stop purchasing.
- Certified Quality: Products are CE and RoHS certified for assured quality.
- Expert Technical Support: Guidance on battery selection, usage tips, and after-sales support.
👇👇👇 Browse the product list below and filter by chemistry or capacity to find the perfect Rechargeable D Battery for your application. For volume quotes or custom pack solutions, please contact our customer service team.
Save $12.99
Save $9.49
Save $7.49
