Battery Specification Volts: 3.7V, Capacity: 525mAh / 1.9Wh Compatible Battery ModelHAC-006 HAC-A-BPJMX-C0 Compatible Controller ModelFor Nintendo HAC-015 HAC-016 HAC-A-JCL-C0 HAC-A-JCR-C0 Switch NS Joy-Con Controller Long Battery LifePremium Grade A cells for longer battery lifespan (number of recharge cycles) with no memory effect.comes with tool sets,Multiple videos are available on YouTube which can make you finish the repair more faster.You could watch YouTube videos for installation instructions.Please use the plastic tool gently. If you think our tools is not convenient to use,you could use your own tools Quality & Safety Guarantee Products are CE certified, tested by manufacturer to match OEM standard. built with multiple circuit protection (over-charging, short-circuit, high-temperature, and surge protection), and high-quality, fire-resistant construction.