Features:

1. HIGH CAPACITY, LONG-LASTING --- 400mAh AAAA rechargeable batteries and comes with a single slot charger, AAAA batteries charger uses trickle charge to extend battery life,NiMH AAAA batteries can be recharged up to 1200 times when fully or partially drained, convenient and more affordable than thousands of alkaline batteries,save huge of money.Compatible with all AAAA AAA and AA NiMH rechargeable batteries.
2. BATTERY TYPE--- Rechargeable Ni-Mh Battery; Capacity: 400mAh; Voltage: 1.2V; Premium Grade A cell for longer battery life with no memory effect. This single slot portable battery charger has an indicator light to show the charging status.The LED light is red when you start charging the battery. When the battery is full / completely charged, the LED light also red, ( no turn light reminder )
3. SAFETY ASSURANCE ---- Comes with special charge and discharge management circuit. With multiple security protection settings, the charger can effectively prevent reverse, short circuit, overcharge, over discharge, over-current damage to the battery, which makes users using the product without any safety concern.Our product has been tested, got safety certificate and meets the applicable published standard. And Besides,it meets ROHS requirement,means a environment friendly product.
4. MULTIPLE CHARGING OPTIONS --- USB port allows you to charge the battery on a charging head, computer, power bank, car charger, and any device with USB interface. Portable size charger easy to carry. ( Size: 101*25.5*23mm )
5. COMPATIBLE WITH A VARIETY OF DEVICES ---- Surface pro 3/4 pen, Digital pen MS(Microsoft surface pen, Dell digital stylus, Bamboo ink pen, Active s etc. including your camera, video game controllers, Bluetooth headsets, and glucose and blood monitors.Widely used on surface pen, alarm clock, LED flashlight, torch, calculator, wireless doorbell, wireless mouse, bike light, digital camera, power bank, meter, radio, gamepad, toys, remote control, mini fan, audio equipment, etc.

Specifications:

• Battery Type: Ni-MH
• Battery Size: AAAA
• Battery Capacity: 400mAh
• voltage: 1.2V
• Rechargeable times: Up to 1200 times
• Charger Size: 101*25.5*23mm
• Battery Size: 42*8mm
• Package Included:
• 2 x AAAA Rechargeable Batteries
• 1 x USB Charger

Compatible With:

Surface Pro 7/6/5/4/3, surface 3, Surface Studio 2, surface pro(2017), Surface Laptop 2, Surface Book 2, Surface 3. Surface

Digital pen MS(Microsoft surface pen, Dell digital stylus, Hearing aid remote, Cameras and led flashlights, Bamboo ink pen, Active stylus pens, Asus stylus,Cordless phones, pen for X1 tablet, Google pixebook pen, Roke remote, Touchscreen pen, HP active pen, Acer stylus, Wacom intuos creative stylus, Asus Chi stylus, Dell Cenue pro 8 stylus, iPad stylus.

Note:

1. High performance, up to 1,200 rechargeable cycles.
2. Excellent charge/discharge performance, the batteries will keep a high quality after 3-5 times charge & discharge when used in the first time or long time no used.
3. Longer life in the high drain devices than normal Alkaline batteries.
4. Doesn't contain Hg/Cd/Pb, no pollution to the environment.
5. Durable case and compact size, convenient for storage and taking on the go.
6. Use them for everyday electronics such as alarm clocks, digital cameras, and universal remotes.
7. Or for emergency supplies such as flashlights and portable radios. And don't forget playtime with wireless video game controllers, remote controlled cars, and other electronic toys.
8. In order to extend battery life, please charge the battery first before using it for the first time and before long-term storage.
9. The batteries can only be used with device and charger with protective plates installed.
10. The capacity of the battery is 400mAh, please charge it in low output current mode to prevent over-charge and over-heat.
11. Battery comes with low power due to transport security, it may reach top performance after 3 cycles of full charge and discharge.
12. We recommend using the battery at least once a month, long term idle may shorten battery's life.
13. Store it in a clean, dry, cool place away from heat and metal objects.