Does this give a cell phone more batteries?

When a cell phone is fully charged, you un-plug it and plug it back in. Then, it will say charging for a while again until it says "Fully Charged".

Do you think that it gives it a little more batteries or ruin batteries?

According to the research that I have done, it harms the battery as it is better to use the battery until it is almost completely gone before recharging.

Drago500 Maiden 3D with 6 Cell Battery

5x 3V Lithium CR2016 Cell Button Coin Battery New 1292 $0.56

9-Cell battery for Dell 312-0763 312-0844 M911G XR693 $34.99

20 x CR2025 5003LC 3V Lithium Cell Coin Battery NACCON CTB $3.74

1 AA 9.6V 2x4 2200mAh NiMH NICD Cell Rechargeable Battery Pack Charger Plug CTB $17.95

1 AA 9.6V 2200mAh NiMH Cell Rechargeable Battery Pack Female Tamiya Plug CTB $15.26

New 6 Cell Replacement Battery for Dell Inspiron 600M Latitude d600 d610 3R315 $19.91

NEW 9cell Laptop Battery for HP Mini 311 311-1000 dm1-1000 Series $49.99

2 AA 7.2V 2200mAh NiMH Cell Rechargeable Battery Pack Charger Tamiya Plug CTB $25.18

5x 3V Lithium CR1632 Cell Button Coin Battery New 1293 $0.12

300 pcs Zinc Air Hearing Aid Cell Battery Tab Size 10 CTB $132.86

24 pcs Zinc Air Hearing Aid Cell Battery Tab Size 675 CTB $12.10

30 x CR2016 5000LC 3V Lithium Button Cell Battery CTB $4.72

2 AA 12V 2200mAh NiMH Cell Rechargeable Battery Pack Charger Tamiya Plug CTB $39.17

16 AAA Cell 1600mAh 3200mAh NiMH 1.2V Rechargeable Battery EU NF+ Charger CTB $63.39

20 AG11 SR58 162 361 362 SR721 LR Alkaline Cell Battery CTB $2.33

40 x CR2016 5000LC 3V Lithium Button Cell Coin Battery CTB $5.89

4pcs 2*AA to D Cell Battery Adaptor Holder Case Convert $1.99

2 AAA Cell 1600mAh 3200mAh NiMH 1.2V Rechargeable Battery US 1206 Charger CTB $13.52

5x 3V Lithium CR1620 Cell Button Coin Battery New 1294 $0.11

4 AAA Cell 1600mAh 3200mAh NiMH 1.2V Rechargeable Battery EU 1206 Charger CTB $19.82

4 AAA Cell 1600mAh 3200mAh NiMH 1.2V Rechargeable Battery AU 1206 Charger CTB $19.82

9-CELL LAPTOP BATTERY DELL INSPIRON 6000 9200 E1705 M90 $29.93

5 x CR927 927 3V Lithium Button Cell Coin Battery Euni CTB $1.74

SESI battery 4400mAh for Acer Aspire 5740-15F BT.00607.013 6 cell $24.42

5x 3V Lithium CR1616 Cell Button Coin Battery New 1295 $0.01

6cell BATTERY FOR LENOVO IdeaPad S9 S9E S10 S10E S12 $35.99

12 AAA Cell 1600mAh 3200mAh NiMH 1.2V Rechargeable Battery AU 1206 Charger CTB $45.02

9 Cell SESI Silver Laptop battery for Apple MacBook Pro 17" A1151 A1189 $142.99

6 Cell Laptop battery for Apple PowerBook G4 12" M8760S/A 661-2787 Silver $126.99

50 x CR2016 5000LC 3V Lithium Button Cell Battery CTB $7.05

New 6 Cell Battery for Sony Vaio VGN-AR11 VGN-AR21 Series VGP-BPL2.CE7 VGP-BPL2 $24.99

6 Cell Laptop Brand new battery for Dell Inspiron 1501 451-10338 $123.99

4 AA 7.2V 2200mAh NiMH Cell Rechargeable Battery Pack Female Tamiya Plug CTB $43.80

6 Cell Laptop battery for Dell Inspiron 1440 series 312-0633 Black Brand new $24.23

30 x CR927 927 3V Lithium Button Cell Coin Battery Euni CTB $4.29

30 x AG1 SR60 164 364 364A LR621 Alkaline Cell Battery CTB $2.41

20 CR1220 DL1220 ECR1220 5012LC Lithium cell battery $3.19

9 Cell Dell Precision M2300 312-0653 Laptop battery for Silver Grey $30.17

5x 3V Lithium CR1220 Cell Button Coin Battery New 1296 $0.16

6cell BATTERY FOR LENOVO IdeaPad S9 S9E S10 S10E S12 $35.99

6 Cell Laptop battery for Dell Inspiron M1330 312-0739 Black $123.99

6 Cells Battery for Acer 3050 3030 3050 3600 3680 3682 $23.99

24 pcs Zinc Air Hearing Aid Cell Battery Tab Size 13 CTB $11.97

35 x CR927 927 3V Lithium Button Cell Coin Battery Euni CTB $4.80

9 Cell SESI laptop Battery for Dell Inspiron 1520 312-0518 Black $30.20

SESI Black Laptop battery for Acer Aspire 5542ANWXMi BTP-AQJ1 12 cell $30.86

11 CR2016 CR 2016 DL2016 Lithium cell battery FAST $3.09

8 Cell Laptop battery for Apple MacBook Pro 15" MA609*/A MA348G/A Silver $129.99

Laptop battery for Acer Aspire 5030 503x LIP6220QUPC 12 cell Black Brand new $30.84

6 Cell Dell Inspiron Mini 1210 F707H laptop battery for Brand new Black $29.99

10 x AG12 SR43 LR43 186 301 386 Alkaline Cell Battery CTB $1.95

10 X CR2032 5004LC Lithium cell battery fast warantee $3.09

15 x CR1220 5012LC 3V Lithium Button Cell Coin Battery CTB $2.84

6 Cell Laptop battery for Dell Vostro 1720 312-0894 Black $29.30

SESI Black Laptop battery for ASUS X50RL X50SL 0-NLF1B2000Y 6 cell USA shipping $28.76

2 AAA Cell 1600mAh 3200mAh NiMH 1.2V Rechargeable Battery US 1412 Charger CTB $19.29

6 Cell Brand new Black Laptop battery for Dell Inspiron 1410 F286H $29.30

9cell BATTERY FOR LENOVO IdeaPad S9 S9E S10 S10E S12 $45.99

5x 3V Lithium CR1216 Cell Button Coin Battery New 1297 $1.28

CAR CHARGER 4 MetroPCS Samsung CRAFT R900 Cell Battery $1.99

6 Cell BATTERY FOR HP COMPAQ MINI 110 110c NY220AA NY221AA $20.89

5 x CR1025 5033LC 3V Lithium Button Cell Coin Battery CTB $1.74

4-Cell Battery Fit Toshiba PA3591U-1BAS PA3591U-1BRS $44.97

60 Size C 9500mAh Ni-MH 1.2V Rechargeable Battery RED Cell HR14 Flashlight CTB $145.15

5x 3V Lithium CR927 Cell Button Coin Battery New 1298 $0.06

9cell BATTERY FOR LENOVO IdeaPad S9 S9E S10 S10E S12 $45.99

8 AAA Cell 1600mAh 3200mAh NiMH 1.2V Rechargeable Battery US 1206 Charger CTB $32.42

15 x CR1632 CR 1632 3V Lithium Button Cell Coin Battery CTB $3.13

9Cell Battery f Dell Vostro 1520 2510 PP36L PP36S K738H $25.99

2 AA 9.6V 2200mAh NiMH Cell Rechargeable Battery Pack Female Tamiya Plug CTB $29.28

2 AA 10.8V 2200mAh NiMH Cell Rechargeable Battery Pack Charger Tamiya Plug CTB $35.82

6cell Battery HP AT907AA 538693-251 538693-961 594637-221 594637-241 5320M 5310M $68.99

4-Cell Battery Fit Toshiba Satellite L45-S2416 L45-S468 $44.97

20 x AG2 SR59 196 396 397 LR726 Alkaline Cell Battery CTB $2.35

100 AG12 SR43 LR43 186 301 386 Alkaline Cell Battery CTB $7.69

25 x CR2016 5000LC 3V Lithium Button Cell Coin Battery CTB $4.20

30 x CR2016 5000LC 3V Lithium Button Cell Coin Battery CTB $4.79

200ALKALINE Cell Batteries AG4 LR626 For Watch BULKSALE $19.87

12 pcs Zinc Air Hearing Aid Cell Battery Tab Size 10 CTB $5.48

10 x CR2025 5003LC 3V Lithium Button Cell Coin Battery CTB $2.48