The ZWO replacement lithium-ion battery (SKU: CH-18650-1S2P) is an original spare power pack designed for the ZWO SeeStar S50 and SeeStar S30 smart telescopes. It serves as a service-level replacement for units that require a new battery due to age or wear. The pack offers a capacity of 6000 mAh with a nominal voltage of 3.7 V (4.2 V at full charge), ensuring stable and reliable power delivery for observation and astrophotography. A removal and installation guide is included.

ZWO emphasizes that battery replacement is not a routine action — the built-in battery of the SeeStar S30/S50 is designed to be durable under normal operation. The warranty for this spare battery is 12 months from the date of receipt, regardless of whether the battery is opened or used. According to ZWO’s internal testing, the battery remains usable for up to 12 months in storage, though the supplier recommends checking its condition every 6 months and avoiding prolonged storage before first use.

Key Features

• genuine ZWO replacement battery for SeeStar S50 and SeeStar S30
• 6000 mAh capacity for stable device operation
• nominal voltage 3.7 V (4.2 V at full charge)
• no memory effect
• rated energy: 22.2 Wh
• includes installation/removal instructions
• intended for necessary replacement only, not routine maintenance

Technical Specifications

• battery type: rechargeable lithium-ion
• capacity: 6000 mAh
• output voltage: 3.7 V (peak 4.2 V)
• dimensions: 67.3 × 36.8 mm
• weight: approx. 94 g
• charging voltage: < 4.2 V
• manufacturer: ZWO / China
• SKU: CH-18650-1S2P

Warnings

• charge only with a charger designed for this battery
• do not charge below 0°C
• do not dispose of in fire
• do not short-circuit the terminals