The Speras ZT20 Battery Capacity Testing Charger is a versatile and intelligent charger designed for hobbyists, technicians, and everyday users who demand accurate performance from their rechargeable batteries. It features dual independent charging slots, and can test the capacity of each battery to assess battery health over time. With its clear LCD display and automatic voltage detection, it simplifies the charging process while offering advanced features like over‑discharge protection, reverse polarity protection, and a restoration function for deeply discharged Li‑ion batteries.
Its compact and efficient design ensures excellent heat dissipation, making it reliable for daily use. Whether you're managing 18650, 21700, or other Li‑ion/NiMH cells, the ZT20 offers flexibility, intelligence, and safety.
Features:
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Dual independent charging slots
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Real battery capacity testing function
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Compatible with Li‑ion, NiMH, and NiCd battery types
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Restores over-discharged Li‑ion cells
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Safety protections: reverse polarity, short-circuit, overcharge
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LCD screen displays voltage, current, capacity
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USB powered for convenient use
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Compact design with effective heat dissipation
Specifications:
| Specification |
Details |
| Input |
USB 5V / 2A |
| Output |
4.2 V / 1 A × 2 slots, or 2A × 1 slot |
| Battery Types |
Li‑ion (21700, 26650, 18650, 14500, etc.), NiMH/NiCd |
| Dimensions |
110 × 48.4 × 28.9 mm |
| Weight |
47.6 g |
| Display |
LCD screen with real-time charging data |
| Protection Features |
Over-discharge, reverse polarity, short-circuit, overcharge |
| Included in Package |
ZT20 Charger, USB cable, user manual |
