1. let the power of the Nokia WWT50 batteries (15%) drain to 0% When you use your brand new Battery first time. And then full charge it(usually charge it full 12 hours) and let it drain to 0% again. Do this for 2~3 cycles.
2. If you have a nickel-metal hydride battery, completely drain and recharge the Nokia WWT50 Cell Phone battery once a month to maximize its capacity to hold a charge.
3. Don’t leave your computer plugged in constantly when it is not in use. If your computer always relies on this power, it will loose its ability to last long on its own. So always charge your computer when the Nokia WWT50 battery is almost dead and then unplug it from the wall.
4. If you have two or more battery pack of WWT50, it’s wise to discharge and then fully charge it on battery power once a week or so, just to keep the battery fresh conditions.
5. Keep it cool. Do not expose the WWT50 battery to high heat or freezing temperatures. Do not leave your battery in your car in the summer. Hot batteries discharge very quickly, and cold ones can’t create as much power.Overheat is damaging harmful for you Cell Phone battery, so it is wise to remove the Battery from a Cell Phone when it has been fully charged.
6. If you do not use your Nokia Cell Phone for extended periods of time (a week or more), remove the Nokia WWT50 battery pack from the Cell Phone .

Samsung VCA-SBT90 battery 2.90Ah/62.64Wh for Samsung Jet 90 75 VS90 VS75 Stick Vacuum
Garmin 361-00053-00 battery 2000mAh/7.4Wh for Garmin Montana 650 650T 600 VIRB GPS Handhelds
Lenovo L18D1P32 battery 4850mAh/18.7Wh for Lenovo Smart Tab M10
Cubot J3 battery 2000mAh/7.6Wh for Cubot J3
Nokia BL-4UL battery 1200mAh/4.4WH for Nokia Asha 225 230
Jumper P313R battery 4900mAh/37.24Wh for Jumper Ezbook 3 Pro 13.3inch / Ezbook 3 Pro LB10/ HW-3487265 Ezbook 3 Pro V3 V4 (7-lines / 8-lines)
Lenovo 01AV409 battery 3530mAh/56WH for Lenovo X1 Yoga ThinkPad X1 Carbon 4th Gen
GLW GR3691 battery 2500mAh/90Wh for GLW LG Razor Hovertrax 2.0 Battery Balance car Scooters
Samsung EB-BG530BBC battery 2600mAh/9.88wh for Samsung SM-G5308W G5500 G5309W G5306W J5008 J3109 J5009
Netgear 332-10886-01 laptop AC adapter 12V 3.5A/42W for Netgear WNDR4300 r7800 r7500
Samsung PN8014 laptop AC adapter 14V–5.72A 80W for SAMSUNG S27A950D 27’LED adapter
LG EAY65249101 laptop AC adapter 19V 2.53A 48W for LG gram 15Z990-U.AAS5U1 Ultrabook
Acer ADP-180MB_K laptop AC adapter 19.5V 9.23A 180W for Acer Aspire 7 A717-72G-700J ADP-180MB_K
Amazon 2955C7 laptop AC adapter 3.8V for Amazon Kindle Fire HD 10.1 7th Gen SL056ZE
Icom BP-224 laptop AC adapter 7.2V for Icom IC-M2A IC-M2 IC-GM1600 IC-M32 IC-M31 Radio
Blackview A8_MAX cell phone battery
Motorola HC40 cell phone battery
S3PRO 5150MAH/19.83WH 3.85V FOR UMI UMIDIGI F1 F1 PLAY S3 PRO
TLI021F7 2150MAH/7.955WH 3.7V FOR ALCATEL PHONE
SHELL01A 800MAH/2.96WH 3.7V FOR DORO PHONEEASY 409GSM 410GSM 520X 605 610 612
CHEETAH_2 3000MAH 3.8V FOR CUBOT CHEETAH 2
LI3708T42P3H553447 820MAH 3.7V FOR ZTE AGENT C70 C78 C88 E520 ESSENZE N295 R250
BL-6Q 970MAH/3.6WH 3.7V FOR NOKIA 6700C 6700
EB-BJ510CBE 3100MAH 11.94WH 3.85V FOR SAMSUNG GALAXY J5 2016 SM-J5108 J5109 J510

* 100% compatible to replace your old use.
* Substitutes made from modern technology.
* With the international Standard Control from R&D, Manufacturing and test, Our battery for Nokia WWT50 have passed CE, UL, ROHS, ISO9001,QS9000 and TS16949.
* Quality battery uses an intelligent control chip, which comes with higher performance and reliability.
* Built-in protection circuitry ensures its stability and safety, fast charge but slow power consumption.
* Guaranteed safety: Protected against Short-circuits, Overheating and Overvoltage.
* 30 days money back, one year warranty, efficient and fast after sales service.