Wokyo Rechargeable 312 Hearing Aid Batteries with Charger & Travel Case - 2 Pack 312 Button Batteries for Hearing Amplifiers - Perfect for Travel, Daily Use & Seniors with Hearing Loss

Usage Method Step 1 Connect power supply and plug Type-C charging cable into charging port. Step 2 Put the battery into the charging slot gently, positive and negative directions of the battery consistent with those of the charger. Step 3 Indicator lights are red when charging begins; lights turns green, when fully charged. Step 4 Green lights indicate the battery is fully chard and the charging process lasts 8 hours. Step 5 When the battery is not charged, please remove the battery from the charging slot and put it in the charger or a safe place. Step 6 Power inspection: when the battery is placed in the battery detection position and a light is on, the power is about 20%. When the two lights are on, the power is 80% or so. Warnings 1 For Bluetooth hearing aids, It can only be used for 4 hours after the battery is fully charged. 2 When charging, the battery must be placed correctly, ensure that the positive and negative plates of the battery correspond to poles of the charger. Please refer to the operation manual on the outer packing box of the charger. 3 Do not put the positive and negative electrodes when charging. The reverse charging will damage the battery; 4 Do not stack the battery together to avoid short circuit; 5 It is recommended to charge the battery for 8 hours. Even if the indicator lights showgreen light, do not take the battery down in a hurry, so that the battery can be fullycharged. 6 During the charging, the indicator shows the red light; 7 Do not leave the battery in a discharged state for a long time. Not charging for a long time may cause the battery to fail to charge. 8 Please use 5V DC power supply with safety certification; the charging current should not exceed 2A; do not apply the mobile phone fast charger to charge. 9 Do not charge the disposable battery, otherwise it may cause accidents. 10 Correctly understand rechargeable batteries and disposable batteries. Rechargeable battery (positive pole surface is smooth). Disposable battery (positive pole surface withseveral small air vents) 11 Before charging, keep the battery clean, wipe the battery surface with a paper towel, and keep the contact pin of the charging slot clean and in stable contact. 12 Do not disassemble the charger. Incorrect assembly can result in risk of electric shock or fire.

【Battery Capacity 15maH】 Battery Capacity is 15maH, up to 15 hours of use on a 6-hour charge time; Moreover, it can be used with USB charging cable for cyclic charging, provide your hearing aid equipment with charging help for a long time whether at home or traveling.

【Comes with 2 312 Battery】Each charging case comes with 2pcs rechargeable batteries, suitable for a variety of hearing aid devices equipped with 312 batteries. So you don't have to buy disposable batteries.

【Environmentally】 One rechargeable battery can be used for 300-500 times=2-3 yearsdisposable battery usage. The use of rechargeable hearing aid batteries canreduce 50-200 discarded cisposable batteries ayear and reduce environmental pollution.

【Convenient to carry】This product is designed to be compact and convenient for you to carry around, and you can charge your hearing aids at any time to ensure that your life runs normally.

【Easy to use】 Connect the Type-C charging port, and thetwo indicator lights in front of the charging box light up; Put the battery into the charging slot, with thepositive pole of the battery facing the front ofthe charger, The negative pole of the batteryfaces the rear of the charger.

【Durable and long lasting】 The product is made of ABS material, not easy to be damaged and durable, using USB charging cable can be quickly charged, simple and convenient.

For Bluetooth hearing aids, It can only be used for 4 hours after the battery is fully charged.