Power Connector
Over time, different ThinkPads have used different power connectors. You can use a higher Amperage rated power supply then your ThinkPad needs, as long as the physical connector is correct. But you should not use a lower Amperage power supply on a ThinkPad needing more Amperage. Doing so will overheat the power supply, and might cause issues such as screen flicker. Hint:
In case you cannot find your Model ThinkPad listed, or you wish to double check, you can find the required power information on a label on the bottom of your ThinkPad
NOTE!
The Amperage's listed below are the OUTPUT values for the AC adapter, which should be equal or greater then what your ThinkPad requires
All current Thinkpads require 20 Volt DC input. See also the official Lenovo page for power adapters. |
6.3 mm outer, 3.0 mm inner diameter
15 V, 2.0 A Power.
- ThinkPad 350, 350C
- ThinkPad 500, 510CS
- ThinkPad 700T, 730T
- 730TE rated 15 VDC, 1.3 A, part 66G9523, FRU 99G0505, reference on ps-2.kev0009.com; another FRU seems to be 84G0505 made in Japan by Panasonic.
4-Pin hexagon
Models using this connector
Unknown watts/amps
- ThinkPad 355, 355CS, 355C
- ThinkPad 360, 360CS, 360C, 360P, 360CSE, 360CE
- ThinkPad 370C
- ThinkPad 700, 700C
- ThinkPad 720, 720C
- ThinkPad 750, 750CS, 750C, 750P
35W
AC Adapter PN 76H0119
- ThinkPad 755CX, 755CV, 755CD, 755CDV
- ThinkPad 760L, 760C, 760CD, 760EL, 760ELD, 760E, 760ED, 760XL, 760XD
40W
50W
20 V 2.5 A - FRU 49G2196
56W
AC Adapter PN 12J2456
A makeshift replacement connector
As these 4-pin PSUs are getting more rare and more expensive, a cheap solution if you don't have one is to adapt a universal 19-20V laptop PSU with a barrel connector. This isn't ideal if you're relying on the Thinkpad for some critical old business application, but it's fine if you're just a tinkerer playing with an old one off eBay for example.
Only the "+" and "-" connections (top-right and bottom-right looking into the connector on the back of the laptop from the back of the laptop) are required for basic operation, so that's all you need to adapt. Get an extension lead for your barrel connector - e.g. 2.1mm - and cut it in half. Discard the plug half. Get a "Mini JST" plug with flying leads, commonly used to power model helicopters etc. This is the plug that I've found will fit over the + and - pins. Wire the two together so that the red wire on the Mini JST is soldered to the centre contact wire on the barrel connector extension (socket half).
ALWAYS double check the polarity when plugging in your custom modded connector, since it's possible to get it the wrong way round.--Cloudane
4-Pin Kycon
This connector resembles, but is slightly larger, than Mini-Din.
120W 7.5 Amps
ThinkPad 120W AC Adapter (Support Website)
AC Adapter FRU PN 92P1035
AC Adapter Ouput: 7.5A, 16V
- ThinkPad G40, G41, G50
- ThinkPad Mini-Dock
5.5 mm outer, 2.5 mm inner diameter
This is a 2.5/5.5mm barrel coax connector, delivering 16 volts. Four AC adapters are commonly available: 35W (16V 2.2 Amps), 54W (16V 3.36 Amps), 56W (16V 3.5 Amps), 72W (16V 4.5 Amps). Some of the 3.36A adapters have been recalled: see the page Damage in 56W AC-Adapter, plastic housing melted.
- ThinkPad 340CSE (rated 1.0A)
- ThinkPad 345CS, 345C (rated 35W 2.2 Amps)
- ThinkPad 365CS, 365C, 365CSD, 365CD, 365E, 365ED, 365X, 365XD (rated 35W 2.2 Amps)
- ThinkPad 380, 380D, 380ED (rated 35W 2.2 Amps)
- ThinkPad 380XD, 380Z, 385XD (rated 2.45A)
- ThinkPad 390, 390E, 390X, i Series 1700 (i Series 1720, i Series 1721, i Series 1780, i Series 1781) (rated 54W 3.36 Amps)
- ThinkPad 560 (rated 1.9A)
- ThinkPad 560E, 560X, 560Z (rated 35W 2.2 Amps)
- ThinkPad 570, 570E (rated 54W 3.36 Amps)
- ThinkPad i Series 1400 and 1500 (type 2621) (i Series 1400, i Series 1500), i Series 1200, i Series 1330 (rated 54W 3.36 Amps)
- ThinkPad A20m, A20p, A21e, A21m, A21p, A22e, A22m, A22p, A30, A30p, A31, A31p, A275, A285, A475, A485 (rated 72W 4.5 Amps)
- ThinkPad T20, T21, T22 (rated 54W 3.36 Amps)
- ThinkPad T23, T30, T40, T40p, T41, T41p, T42, T42p, T43, T43p (rated 72W 4.5 Amps)
- ThinkPad TransNote (rated 3.7A)
56W 3.5 Amps
barrel connector, slim
19 Volt Coax connector
IBM called it "barrel connector, slim". 19 V, 45 W 2.4 A. 5.5 mm outer, 2.1 mm inner diameter. Option Marketing number 11J8702. See AC adapter matrix (Doc PD012162) as a source of information.
- ThinkPad 310 (type 2600)
- ThinkPad 310, 310D, 310E, 310ED
- ThinkPad i Series 1400 and 1500 (type 2611) (reference Doc LWIK-3Z7J5H)
big barrel "advanced" connector
20 Volt Coax. 7.5mm OD, 5.55mm ID, 0.8mm diameter central pin.
Signal Pin
Power controller subsystem senses when power is connected, and measures resistance between central signal pin and ground. Firmware policy might reduce performance (battery charges slowly, processors throttle to low speed) if an insufficient supply is detected. This issue is discussed at forum.thinkpads.com, "W520 requires 170W AC adapter".
power rating | resistance |
---|---|
65 W | 10 kΩ |
90 W | not connected |
135 W | 0 Ω |
170 W | 1.5 kΩ |
Models using this connector
65W 3.25 Amps
AC Adapter Output 3.25A, 20V
- ThinkPad R60, R400, R500 - with Intel Graphics
- ThinkPad T60, T400, T400s, T410s, T500, T510, - with Intel Graphics
- ThinkPad T410i, T410si, T430i, T510i
- ThinkPad X60s, X61, X61s, X61 Tablet
- ThinkPad X100e, X200, X200s, X200 Tablet, X201, X201i, X201s, X201 Tablet, X300, X301, X220, X220 Tablet, X230, X230 Tablet
- Thinkpad Z60m, Z60t, Z61e, Z61m, Z61t - with Intel Graphics
90W 4.5 Amps
- ThinkPad R60, R60e
- ThinkPad T60, T60p, T61, T61p, T400, T410, T500, T510 - With ATI or Nvidia Graphics
- ThinkPad T430
- ThinkPad T520 - Dual Core
- ThinkPad W500
- ThinkPad Z60m, Z60t
135W 6.75 Amps
AC Adapter PN 55Y9317
W520 W530 variant
170W 8.5 Amps
AC Adapter PN 0A36227 (US) and PN 0A36231 (EU)
- ThinkPad W520, W530
- ThinkPad Mini Dock Plus Series 3 - 170W
The size of this connector is same as on usual 20V AC adapters, but inner detail is different. Inside this connector is not round any more: it has two symmetric plastic knobs. A user can only plug it in two particular orientations. The extra knobs prevent one from using the AC adapter with any other Thinkpads.
How to use 170W powersupplies with other Models
Tip by jcvjcvjcvjcv on forum.thinkpads.com.
slim plug
This connector is used in power accessories, not in any Think system. It is found in 90W Slim AC/DC Combo Adapter (which won a Good Design Award ) and later 90W Ultraslim AC/DC Combo Adapter.
- cigarette lighter DC cable and plug assembly: FRU 41R0145, Assembly PN 41R0144 (for first Slim Combo, not Ultraslim)
slim power tips
- Lenovo Slim Power Tip for X1 Carbon: Marketing part number 0B47048; Replacement part number (FRU) 03X6262. (Despite its name, compatibility is not limited to X1 Carbon.)
- 20VDC output ("advanced" connector; 90W max.): 41R4286
- 19VDC output (for IdeaPad; 90W max.): 41R4356
- 16 volt output tip (5.5/2.5mm; 72W max.): 41R4285
W700 Coax connector
6.0 mm outer, 3.0 mm inner diameter.
The W700/W700ds AC adapter plug has a different diameter than all other 20 Volt AC adapters. You cannot plug in a different AC adapter into a W700-series Thinkpad nor can you use the W700 AC adapter on a non-W700 Thinkpad.
170W 8.5 Amps for W700
AC Adapter PN 41R4421
230W 11.5 Amps
AC Adapter PN 55Y9333
slim tip
Lenovo introduced a new power connector in 2012. This connector is standard in all new models since late 2013 product line. It is rectangular, close in size to USB A connector, and it has a signal pin in centre.
Signal Pin
power rating | resistance |
---|---|
36 W | Help needed
{{{1}}}
|
45 W | 120 Ω |
65 W | 280 Ω |
90 W | 550 Ω |
135 W | 1 kΩ |
170 W | 1.9 kΩ |
Models using this connector
A conversion cable for 20V barrel plugs exists: ThinkPad Slim Power Conversion Cable; Model L01DC001-NB-R; Option Marketing number 0B47046; ASM 0A36037; FRU 03X6261; UPC 887263167790; EAN 0887263167790; JAN 4560421046101.
- OneLink connector
- ThinkPad Ultra Dock
36W 12 V ⎓ 3 A
- ThinkPad Tablet 36W DC Charger: model 4X20E75080; FRU 03X6283; Doc PD031186; Publication tp_tablet_dc_sp40e49063.pdf;
- ThinkPad Tablet 10
45W 2.25 Amps
- IdeaPad Yoga 11
- ThinkPad Yoga S1
- ThinkPad Helix
- ThinkPad T431s
- ThinkPad X230s, X240, X240s
- ThinkPad T440s (with Intel graphics)
65W 3.25 Amps
- IdeaPad Yoga 13
- ThinkPad Edge E531
- ThinkPad T440s (with discrete graphics)
90W 4.5 Amps
- ThinkPad X1 Carbon
135W 6.75 Amps
170W 8.5 Amps
unsorted
- ThinkPad 820, 860, i Series 1124, i Series 1157, i Series 1300, i Series 1370, i Series 1620, i Series 1800
- ThinkPad S30, S31
- 54 or 56 W, clarity needed: i Series 1210, i Series 1230, i Series 1250, i Series 1260, i Series 1420, i Series 1460, i Series 1480, i Series 1421, i Series 1441, i Series 1422, i Series 1442, i Series 1482, i Series 1483, i Series 1492, i Series 1540, i Series 1541, i Series 1542, i Series 1560, i Series 1562, i Series 1592,
10.5 V, 1.0 A Power
- ThinkPad 220
- 350
- 350C
- 500
- 510CS
- 700T
- 730T
- 730TE
- 355
- 355CS
- 355C
- 360
- 360CS
- 360C
- 360P
- 360CSE
- 360CE
- 370C
- 700
- 700C
- 720
- 720C
- 750
- 750CS
- 750C
- 750P
- 755CX
- 755CV
- 755CD
- 755CDV
- 760L
- 760C
- 760CD
- 760EL
- 760ELD
- 760E
- 760ED
- 760XL
- 760XD
- 555BJ
- 755C
- 755CS
- 755CSE
- 755CE
- 760LD
- 360PE
- 850
- 765L
- 765D
- G40
- G41
- G50
- 235
- 240
- 240X
- 240Z
- 340CSE
- 345CS
- 345C
- 365CS
- 365C
- 365CSD
- 365CD
- 365E
- 365ED
- 365X
- 365XD
- 380
- 380D
- 380ED
- 380XD
- 380Z
- 385XD
- 390
- 390E
- 390X
- I1720
- I1721
- I1780
- I1781
- 560
- 560E
- 560X
- 560Z
- 570
- 570E
- 600
- 600E
- 600X
- 701C
- 701CS
- 770
- 770X
- 770Z
- I1400
- I1500
- I1200
- I1330
- A20m
- A20p
- A21e
- A21m
- A21p
- A22e
- A22m
- A22p
- A30
- A30p
- A31
- A31p
- A275
- A285
- A475
- A485
- R30
- R31
- R32
- R40
- R40e
- R50
- R50e
- R50p
- R51
- R51e
- R52
- T20
- T21
- T22
- T23
- T30
- T40
- T40p
- T41
- T41p
- T42
- T42p
- T43
- T43p
- X20
- X21
- X22
- X23
- X24
- X30
- X31
- X32
- X40
- X41
- X41 Tablet
- TransNote
- 340
- 380E
- 385D
- 385ED
- 535
- 535E
- 770E
- 770ED
- 310
- 310D
- 310E
- 310ED
- I1410
- I1411
- I1412
- I1450
- I1451
- I1452
- I1472
- I1512
- I1552
- R60
- R400
- R500
- T60
- T400
- T400s
- T410s
- T500
- T510
- T410i
- T410si
- T430i
- T510i
- X60s
- X61
- X61s
- X61 Tablet
- X100e
- X200
- X200s
- X200 Tablet
- X201
- X201i
- X201s
- X201 Tablet
- X300
- X301
- X220
- X220 Tablet
- X230
- X230 Tablet
- Z60m
- Z60t
- Z61e
- Z61m
- Z61t
- R60e
- T60p
- T61
- T61p
- T410
- T430
- T520
- W500
- W510
- W520
- W530
- W700
- W700ds
- W701
- W701ds
- IdeaPad Yoga 11
- Yoga S1
- Helix
- T431s
- X230s
- X240
- X240s
- T440s
- IdeaPad Yoga 13
- E531
- X1 Carbon
- T540p
- W540
- 820
- 860
- I1124
- I1157
- I1300
- I1370
- I1620
- I1800
- S30
- S31
- I1210
- I1230
- I1250
- I1260
- I1420
- I1460
- I1480
- I1421
- I1441
- I1422
- I1442
- I1482
- I1483
- I1492
- I1540
- I1541
- I1542
- I1560
- I1562
- I1592
- 220
- Components