D size (size 1) lithium battery capacity covers 4500mWh and 6000mWh tiers, suitable for searchlights, high-power flashlights, radios, walkie-talkies, emergency lights, camping lanterns, electric toys, industrial instruments, legacy device replacement. These devices have high power consumption and demand high battery capacity.
C size (size 2) lithium battery capacity covers 1500mWh and 2000mWh tiers, suitable for medium flashlights, radios, camping lanterns, toys, instruments, searchlights, emergency equipment. C size batteries are between AA and D in volume, suitable for devices with both space and capacity requirements.
Taking D size as example: alkaline D cell about 15-25 yuan each, not rechargeable, about 2-4 hours runtime in high-power devices. D size lithium 6000mWh about 80-120 yuan each, rechargeable 800+ times, 8-12 hours runtime per charge. At 1 hour daily use, lithium battery lasts 2+ years, total cost far below continuously purchasing alkaline batteries.
For equipment manufacturers, pairing rechargeable lithium batteries increases product value while reducing end-user operating costs. D/C size lithium battery replacement demand continues growing in professional lighting, emergency equipment, industrial inspection and other fields.
Our technical team can provide professional battery selection solutions and OEM/ODM customization services based on your device requirements.
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