Old Model Cordless Angle Grinder Restoration | Hitachi G 18DSL

This an old model cordless angle grinder that I bought it from Japan recycle shop price 15$ without battery and charger. I bought new battery case and battery cells from china. *Cordless Angle Grinder - Company Hitachi Koki - Model G18DSL - Voltage 18 V - Rated speed 9100/min - Wheel (outer dia. × thickness × hole dia.) 115 × 6 × mm - Wheel (peripheral speed) 80 m/s - Rechargeable battery BSL1830: Li-ion 18 V (5.0 Ah, 10 cells) - Weight 1.8 kg *Charger Model UC18YRSL Charging voltage 14.4 V 18 V Weight 0.6 kg *Label text 100mm コードレスディスクグラインダ 日立工機 G 18DSL 日立工機 DC 18V 9100min-1 トイシ 100 x 6 x 15 mm 72m/s{4,300m/min} ⚠警告 ●ご使用前に収扱説明書ӛ