High-precision BL-1400 rechargeable lithium battery engineered for Hi-target GNSS RTK systems (V8/V9/V10) and total stations. Ultra-durable 4000mAh capacity with advanced lithium-ion cells ensures extended fieldwork without frequent recharging. Precision-molded ABS shell with shockproof ribs and IP54 rating protects against dust, drops, and harsh job site conditions. Smart chip prevents overcharge/overheat while maintaining stable voltage output for accurate surveying data. Universal compatibility includes seamless fit with Hi-target legacy models and third-party adapters. Ideal for construction layout, topographic mapping, and cadastral surveys requiring all-day power. OEM-grade quality at wholesale pricing with bulk order discounts available.