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Comparison Table of Universal Plant Protection Drones' Model+Battery Storage Empty Size → Precise Matching Capacity '
Self made modified plant protection (divided into three major voltages of 6S/12S/14S, with precise capacity matching according to the size of the battery compartment)
① 6S 22.2V (10~20L small four axis/six axis)


②12S 44.4V (25~40L medium to large homemade machine)


③14S 51.8V (imitation DJI T series self-made frame)


④24S 88.8V (heavy-duty self-made plant protection equipment for vehicles over 50L)
Storage unit 355×240×150→20000mAh; Storage unit 385×258×168→30000mAh

Quick self-test formula (user provides bin size, one-click capacity calculation)
Capacity (mAh) = Length × Width × Height × 0.085 (industry-standard K value, soft-pack lithium polymer), with a result ±5% variation
Example: Battery 200×80×70 → 200×80×70×0.085=9520 ≈ 9500mAh
V. Supplementary Information on Model Selection
To enhance battery life: For batteries of the same size, priority should be given to high-voltage cells (3.8V), with a capacity increase of 8% to 12%
Low-temperature regions in the north: reduce capacity by 5% for the same size, and reserve space for heating

Battery models and specifications for some crop protection drones