Seiko Watch Battery Replacement Guide

In this guide, we will explain how to replace a Seiko watch battery. It does require some tools, but it should not take a long time. Make sure to work very carefully to prevent additional damage to your watch. 

If you’d prefer to leave the battery replacement to the experts, many opt to use our Seiko mail-in watch battery replacement service. You can request a free, printable shipping label to mail your watch to our service center.

Seiko Watch Battery Replacement

Seiko Watch Battery Finder // Replacement Chart

Check the back case of your Seiko model number on the back case of your watch, and type the first section of it (ie. 2R05) in the search box. If you feel comfortable performing the process on your own, follow the steps below to learn how to change a Seiko watch battery. Before continuing, make sure your watch is not a solar watch. If it is, we recommend delegating to the experts for Seiko solar watch battery replacement. This rechargeable battery is actually a special cell called a capacitor, which should be replaced by a trained watchmaker.

SEIKO MODEL NUMBERCELL REQUIRED
0114SR43W
0124SR43W
0138SR1130W
0139SR1130W
0432SR1130W
0439SR1130W
0531SR41W
0532SR41W
0533SR41W
0534SR41W
0614SR44W
0624SR43W
0634SR43W
0644SR43W
0654SR43W
0662SR43W
0664SR43W
0674SR43W
0822SR43SW
0823SR43SW
0841SR43SW
0842SR43SW
0843SR43SW
0852SR43SW
0853SR43SW
0903SR43SW
0920SR43SW
0922SR43SW
0923SR43SW
1220SR616SW
1221SR616SW
1230SR616SW
1231SR616SW
1270SR616SW
1271SR616SW
1320SR621SW
1400ASR621SW
1400CSR621SW
1421SR621SW
1428SR621SW
1600SR41SW
1609SR41SW
1E20SR512SW
1E50SR512SW
1E70SR512SW
1F20SR416SW
1F21SR421SW
1M20MT516
1N00SR516SW
1N01ASR521SW
1N01BSR521SW
2320SR621SW
2340SR621SW
2620SR726SW
2621SR726SW
2622SR41SW
2623SR41SW
2625SR726SW
2625SR726SW
2626SR726SW
2628SR726SW
2632SR927SW
2633SR927SW
2639SR927SW
2661SR726SW
2A22SR621SW
2A23SR621SW
2A24SR621SW
2A27SR621SW
2A29SR621SW
2A32SR621SW
2A52SR621SW
2A54SR621SW
2A59SR621SW
2B20SR521SW
2B21SR521SW
2B31SR521SW
2C20SR521SW
2C21SR521SW
2D22SR621SW
2E20ASR521SW
2E20BSR521SW
2E50SR521SW
2E70SR521SW
2F50SR512SW
2F70SR512SW
2G28SR527SW
2G38SR521SW
2G78SR527SW
2G98SR521SW
2J30SR421SW
2J31SR421SW
2J41SR421SW
2J80SR421SW
2K00SR616SW
2K01SR616SW
2K02SR621SW
2K03SR621SW
2K22SR621SW
2K23SR621SW
2L10SR516SW
2M21SR920W
2N20SR512SW
2P20SR516SW
2P21SR521SW
2Y00SR516SW
2Y01SR521SW
2Y07SR521SW
3421SR726SW
3422SR726SW
3423SR726SW
3800SR44SW
3802SR44SW
3803SR44SW
3819SR44SW
3820SR44SW
3823SR44SW
3862SR44SW
3863SR44SW
3870SR44SW
3883SR44SW
3922SR44SW x 2
3923SR44SW x 2
3E22SR621SW
3E23SR621SW
3E25SR621SW
3E29SR621SW
3E32SR621SW
3E39SR621SW
3F30SR616SW
3F31SR616SW
3F81SR616SW
3L12SR621SW
3L14SR621SW
3L19SR621SW
3M21MT616
3M22MT616
3M62MT616
3Y02SR621SW
3Y03SR621SW
3Y09SR621SW
4100SR41SW
4110SR41SW
4120SR41SW
4122SR41SW
4130ASR41SW
4130BSR41SW
4300SR41SW
4301SR41SW
4302SR41SW
4303SR41SW
4312SR41SW
4316SR41SW
4325SR41SW
4326SR41SW
4335SR43SW
4336SR43SW
4366SR41SW
4622SR43SW
4623SR43SW
4633SR43SW
4700SR41SW
4720SR41SW
4803SR43SW
4821SR43SW
4822ASR43SW
4822BSR936SW
4823ASR43SW
4823BSR936SW
4840ASR43SW
4840BSR936SW
4842ASR43SW
4842BSR936SW
4843ASR43SW
4843BSR936SW
4883ASR43SW
4883BSR936SW
4F32CR1612 with insulator
4F56CR1612 with insulator
4J27ASR521SW
4J27BSR521SW
4J40BSR516SW
4J41ASR516SW
4J41BSR516SW
4J42SR616SW
4J45BSR616SW
4J51ASR521SW
4J51BSR521SW
4J52ASR621SW
4J52BSR621SW
4J80SR516SW
4J80BSR516SW
4J81SR516SW
4J81BSR516SW
4J85ASR616SW
4J85BSR516SW
4K22SR621SW
4K24SR621SW
4K25SR621SW
4K26SR621SW
4K34SR621SW
4M21MT616
4M61MT516
4N00SR516SW
4N01SR521SW
4N20ASR516SW
4N20DSR516SW
4N21ASR516SW
4N70SR516SW
4N71SR516SW
5420SR621SW
5421SR527SW
5854SR1120SW
5855SR1120SW
5856SR1120SW
5930SR721SW
5931SR721SW
5932SR721SW
5933SR721SW
5939SR721SW
5A50SR512SW
5A54SR512SW
5A70SR512SW
5A74SR512SW
5B21SR927SW
5C20SR721W
5C21SR721W
5C22SR721W
5C23SR721W
5C59SR721W
5D22MT920
5D44MT920
5D88MT920
5E20SR716SW
5E21SR716SW
5E29SR716SW
5E30SR716SW
5E31SR716SW
5E32SR716SW
5E39SR716SW
5E42SR716SW
5E61SR716SW
5G23CR2012
5H22SR920SW
5H23SR920SW
5H26SR920SW
5J21MT920
5J22MT920
5J32MT920
5K22MT920
5K25MT920
5K2JMT920
5L10SR920SW
5L14SR920SW
5L15SR920SW
5M22TC920
5M23TC920
5M25TC920
5M42TC920
5M43TC920
5M45TC920
5M47TC920
5M54TC920
5M62TC920
5M63TC920
5M65TC920
5P22SR920SW
5P23SR920SW
5P29SR920SW
5P30SR920SW
5P31SR920SW
5P32SR920SW
5P39SR920SW
5S21SR927SW
5S42SR927SW
5T12SR927SW
5T24SR927SW
5T32SR927W
5T50SR927W
5T52SR927W
5T72SR927W
5T82SR927W
5Y00SR920SW
5Y01SR920SW
5Y02SR920SW
5Y13SR1120SW
5Y22SR920SW
5Y23SR920SW
5Y29SR920SW
5Y30SR920SW
5Y31SR920SW
5Y32SR920SW
5Y37SR920SW
5Y39SR920SW
5Y63SR920SW
5Y66SR920SW
5Y67SR920SW
5Y75MT920
5Y81SR916SW
5Y85SR916SW
5Y86SR916SW
5Y88SR916SW
5Y89SR916SW
5Y91SR626SW
5Y94SR616SW
5Y95SR621SW
6020ASR920SW
6020BSR920SW
6030SR920SW
6423SR1120SW
6429SR1120SW
6430SR1120SW
6431SR1120SW
6432SR1120SW
6433SR1120SW
6439SR1120SW
6530SR920SW
6531SR920SW
6532SR920SW
6533SR920SW
6539SR920SW
6720TR709SW
6730SR712SW
6922SR927SW
6923SR927SW
6A32SR927SW
6F22SR920SW
6F24SR920SW
6F25SR920SW
6F26SR920SW
6F28SR920SW
6F29SR920SW
6F32SR920SW
6F34SR920SW
6F38SR920SW
6F75SR920SW
6G28SR626SW
6G34SR626SW
6L01SR920W
6M12SR927W
6M13SR927W
6M15SR927W
6M23SR927W
6M25SR927W
6M26SR927W
6M37SR927W
6M91SR927W
6N76SR621SW
6T63SR936SW
7121SR1130SW
7122SR1130SW
7123SR1130SW
7126SR1130SW
7143SR1130SW
7223SR1130W
7320SR616SW
7321SR616SW
7370SR616SW
7371SR616SW
7424SR721SW
7430SR721SW
7431SR721SW
7432SR721SW
7433SR721SW
7434SR721SW
7439SR721SW
7454SR721SW
7518SR43SW
7545SR43SW
7546SR43SW
7548SR43SW
7549SR43SW
7550SR43SW
7559SR43SW
7730SR916SW
7731SR916SW
7732SR916SW
7740SR916SW
7741SR916SW
7742SR916SW
7749SR916SW
7750SR916SW
7751SR916SW
7752SR916SW
7759SR916SW
7770SR916SW
7771SR916SW
7772SR916SW
7779SR916SW
7800SR927SW
7810SR927SW
7812SR927SW
7813SR927SW
7820SR927SW
7830SR927SW
7832SR927SW
7853SR927SW
7902SR41SW
7903SR41SW
7918SR41SW
7A07SR936SW
7A28SR936SW
7A34SR936SW
7A36SR936SW
7A38SR936SW
7A48SR936SW
7A54SR936SW
7C11SR43SW
7C17ASR43SW
7C17BSR43SW
7C21ACR2016
7C21BSR43SW
7C43SR927SW
7C46ASR43SW
7C46BSR43SW
7D46MT920
7D48MT920
7D56MT920
7F18SR916SW
7F22SR916SW
7F24SR916SW
7F26SR916SW
7F32SR916SW
7F38SR916SW
7F39SR916SW
7F68SR916SW
7F69SR916SW
7F87SR916SW
7F99SR916SW
7G21CR2012
7G21-WATCHSR521SW
7J21SR927SW
7K32CR2012
7K36CR2012
7K52CR2016
7L22MT920
7M12MT920
7M22MT920
7M42MT920
7M45MT920
7N00ASR616SW
7N00CSR616SW
7N00DSR616SW
7N01ASR621SW
7N01CSR621SW
7N01DSR621SW
7N07ASR621SW
7N07CSR621SW
7N07DSR621SW
7N08ASR621SW
7N08CSR621SW
7N08DSR621SW
7N21CSR920SW
7N22SR920SW
7N22CSR920SW
7N29SR920SW
7N29CSR920SW
7N32CSR920SW
7N33SR920SW
7N33CSR920SW
7N35SR920SW
7N35CSR920SW
7N36SR920SW
7N36CSR920SW
7N39CSR920SW
7N42SR920SW
7N42CSR920SW
7N43SR920SW
7N43CSR920SW
7N47SR920SW
7N47CSR920SW
7N48SR920SW
7N48CSR920SW
7N82ASR621SW
7N82CSR621SW
7N82DSR621SW
7N83ASR621SW
7N83CSR621SW
7N83DSR621SW
7N85ASR621SW
7N85CSR621SW
7N89ASR621SW
7N89CSR621SW
7N89DSR621SW
7N93SR920SW
7N93CSR920SW
7T04SR927W
7T11SR927SW
7T22SR927SW
7T24SR927SW
7T27SR927SW
7T32SR927W
7T34SR927W
7T36SR927W
7T39SR927W
7T42SR927W
7T44SR927W
7T52SR927W
7T59SR927W
7T62SR927W
7T82SR927W
7T84ASR927W
7T85SR927SW
7T86SR927SW
7T92SR927SW
7T94SR927SW
8121SR1120SW
8122SR1120SW
8123SR1120SW
8221SR936SW
8222SR936SW
8223SR936SW
8229SR936SW
8241SR936SW
8242SR936SW
8243SR936SW
8249SR936SW
8420SR616SW
8522SR726SW
8523SR726SW
8620SR621SW
8A20SR44W
8A21SR44W
8A23SR44W
8A24SR44W
8C22SR726SW
8C23SR726SW
8C25SR41W
8E+38SR621SW
8F32BR2412 with insulator
8F33BR2412 with insulator
8F35BR2412 with insulator
8F56BR2412 with insulator
8F58BR2412 with insulator
8J40SR916SW
8J41ASR916SW
8J41BSR916SW
8J42SR916SW
8J55ASR920SW
8J55BSR920SW
8J56ASR920SW
8J56BSR920SW
8J80ASR916SW
8J80BSR916SW
8J81ASR916SW
8J81BSR916SW
8J82ASR916SW
8J82BSR916SW
8J86ASR916SW
8J86BSR916SW
8M11SR920W
8M15SR920W
8M18SR920W
8M25SR920W
8M26SR920W
8M32SR920W
8M35SR920W
8M37SR920W
8M44SR920W
8M48SR920W
8M51SR920W
8N20SR716SW
8N21SR716SW
8N25SR716SW
8N26SR716SW
8N40SR716SW
8N41SR716SW
8N45SR716SW
8N46SR716SW
8N51SR716SW
8N65SR716SW
8N70SR716SW
8N71SR716SW
8N75SR716SW
8N81SR716SW
8N91SR716SW
8V20SR1130W
8V22SR1130W
8V36SR43W
8Y21SR621SW
9020SR916SW
9021SR916SW
9022SR916SW
9029SR916SW
9061SR920SW
9063SR920SW
9223SR1120SW
9256SR1120SW
9300SR916SW
9320SR909SW
9441SR1120SW
9442SR1120SW
9443SR1120SW
9461SR1120SW
9481SR1120SW
9483SR1120SW
9520SR916SW
9521SR916SW
9522SR916SW
9530SR916SW
9531SR916SW
9533SR916SW
9539SR916SW
9544SR920SW
9550SR916SW
9552SR916SW
9559SR916SW
9562SR916SW
9570SR916SW
9571SR916SW
9572SR916SW
9579SR916SW
9581SR916SW
9587SR916SW
9641SR920SW
9642SR920SW
9661SR920SW
9681SR920SW
9682SR920SW
9721SR1130SW
9722SR1130SW
9723SR1130SW
9726SR1130SW
9920SR927SW
9921SR927SW
9923SR927SW
9940SR927SW
9942SR927SW
9943SR927SW
9980SR927SW
9983SR927SW
9A85SR712SW
9F61SR920SW
9F62SR920SW
9F82SR920SW
9F83SR920SW
9M21CR2016
A021SR1130W
A029SR1130W
A031SR1130W
A039SR1130W
A127SR1130W
A128SR1130W
A129SR1130W
A133SR1130W
A134SR1130W
A135SR1120W
A156Maxell XR11630W - (Rechargeable battery unit)
A158SR1130W
A159SR1130W
A169SR1130W
A229SR927W
A239SR927W
A257SR927W
A258Maxell XR9527W - (Rechargeable battery unit)
A259SR927W
A354SR1120W
A358SR1120W
A359SR1120W
A439SR927W
A547SR726W
A628Maxell XR9527W - (Rechargeable battery unit)
A638SR41W
A639SR41W
A708CR2016
A714CR2016
A718CR2016
A721CR2016
A781CR2016
A826CR2016
A827CR2016
A828CR2016
A829CR2016
A860CR2025
A861CR2025
A904CR2016
A906CR2016
A914CR2016
A927CR2016
A939CR2016
A964CR2016
A965CR2016
A966CR2016
B004SR721W
B010CR2032
B122SR927W
B137SR927W
B200SR726W
B337SR721W
C153SR1130W
C359SR927W
C439SR1130W
C515CR2016
D031SR927W
D138SR1120W
D229SR1130W
D409CR2016
D410CR2016
DH33CR2032
E029SR726W
F023SR1120SW
F033SR1120SW
F039SR1130W
F051SR1130W
F162SR927SW
F221SR721SW
F231SR721SW
F322SR916SW
F332SR916SW
F421TR912SW
F441SR916SW
F623SR726W
G139CR2025
G300CR1616
G510CR2025
G757SR1120W
H021SR1130W
H022SR1130W
H023SR1130W
H024ASR1130W
H127SR936SW
H239SR1130W
H249SR927W
H259SR927W
H357SR927W
H448SR927W
H449SR927W
H461SR41W
H556SR920W
H557SR920W
H558SR927W
H601SR920W
H711SR927W
H801SR920W
H803SR920W
L012SR927SW
L122SR621SW
L221SR726SW
L223SR726SW
L250CR1620
L251CR1620
L423SR721SW
L600CR2025
L620SR721SW
L823SR916SW
M154SR1130W
M158SR1130W
M159SR1130W
M354SR1130W
M421CR2016
M422CR2025
M516SR1130W x 2
M615Solar
M705CR2025
M725CR2025
M726CR2025
M795CR2025
M796CR2025
M929SR41W
N944SR927W
N945SR927W
N94JSR927W
NX01AQ : SR626SW x 2 DQ : SR41W x 2
NX02AQ: SR626SW x 2 DQ : SR41W x 2
NX03AQ: SR626SW x 2 DQ : SR41W x 2
NX04AQ: SR626SW x 2 DQ : SR41W x 2
NX11AQ: SR626SW x 2 DQ : SR41W x 2
NX14AQ: SR626SW x 2 DQ : SR41W x 2
NX15AAQ: SR626SW x 2 DQ : SR41W x 2
P104CR1620
P106CR1620
P108CR1620
P114CR1620
P116CR1620
P118CR1620
PC21SR626SW
S021SR43W
S022SR43SW
S023SR41W
S024SR41W
S025Solar
S026SR41W
S027SR41W
S031CR2032
S032CR2032
S034CR2032
S035Solar
S038CR2032
S039CR2032
S051CR2032
S052CR2032
S053CR2032
S054CR2032
S055Solar
S056CR2032
S057CR2032
S058CR2032
S059CR2032
S05ACR2032
S060SR44W
S101SR44W
S111SR44W
S119SR44W
S120CR2032
S123CR2032
S124CR2032
S129CR2032
S140CR2430
S141CR2430
S143CR2430
S149CR2430
S229CR2016
S234CR2016
S240CR2025
S251CR2032
S252CR2032
S301SR43SW
S321CR2016
S322CR2032
S341SR44W x2
S351CR2032
S501BR2325
S521BR2325
S600SR927W
S602CR1620
S610CR2016
S640CR2025
S650CR1620
S651CR2025
S670CR2025
S680Solar
S701CR2032
S750ASolar
S760Solar
S770Solar
S771Solar
S800CR2025
S820CR2025
S821CR2025
UW01BR2325
V001SR726W
V011SR920W
V031SR41W
V041SR726W
V051SR920W
V061SR726W
V062SR726W
V071SR927W
V072SR927W
V081SR1130W
V083SR1130W
V084SR1130W
V085SR1130W
V091SR1120W
V102GC1120
V103GC1120
V110MT516
V111GC1120
V114MT516
V115MT516
V116MT516
V117MT516
V121MT920
V122MT920
V137MT920
V142MT920
V145MT920
V147MT920
V14JMT920
V157MT920
V158MT920
V172MT920
V174MT920
V175MT920
V181MT616
V182MT616
V185MT616
V187MT616
V220SR521SW
V220BSR521SW
V220BSR521SW
V230SR521SW
V231SR521SW
V232SR521SW
V232SR521SW
V233SR521SW
V235SR521SW
V236SR527SW
V242SR621SW
V243SR621SW
V247SR621SW
V248SR621SW
V249SR621SW
V250SR621SW
V251SR621SW
V252SR621SW
V253SR621SW
V254SR621SW
V256SR621SW
V257SR621SW
V258SR621SW
V267SR621SW
V300SR616SW
V301SR621SW
V306SR626SW
V318SR716SW
V320SR616SW
V321SR916SW
V322SR916SW
V329SR916SW
V333SR916SW
V336SR916SW
V337SR916SW
V338SR916SW
V339SR916SW
V33FSR916SW
V33GSR916SW
V33JSR916SW
V342SR916SW
V347SR920SW
V348SR920SW
V400SR516SW
V401SR521SW
V421SR726W
V422SR726W
V500ASR626SW
V500GSR626SW
V501ASR626SW
V501CSR626SW (Ring Module) SR626SW x 2
V501GSR626SW
V506SR626SW
V507ASR626SW
V507CSR626SW (Ring Module) SR626SW x 2
V511SR626SW
V515ASR626SW
V515FSR626SW
V515GSR626SW
V516SR626SW
V517SR626SW
V52FSR626SW (Ring Module) SR626SW x 2
V52GSR626SW (Ring Module) SR626SW x 2
V52HASR927W
V531SR927SW
V532SR927SW
V533SR927SW
V534SR927SW
V535SR927SW
V536SR927SW
V537SR927SW
V539SR927SW
V53LSR927SW
V544SR927SW
V600SR1130W
V601SR1130W
V602SR1130W
V610SR621SW (Watch) and SR626W (Timer)
V612SR621SW (Watch) and SR626W (Timer)
V621SR920W
V636SR43W
V653BSR920SW
V654SR920SW
V655ASR920SW
V655BSR920SW
V656SR920SW
V657ASR920SW
V657BSR920SW
V658BSR920SW
V671SR920W
V681SR927W
V682SR927W
V691SR920W
V692SR920W
V693SR920W
V694SR920W
V695SR920W
V69FSR920W
V700ASR616SW
V700CSR616SW
V701ASR621SW
V701CSR621SW
V701DSR621SW
V707ASR621SW
V707CSR621SW
V707DSR621SW
V708ASR621SW
V708CSR621SW
V708DSR621SW
V721BSR920SW
V721CSR920SW
V722ASR920SW
V722CSR920SW
V729ASR920SW
V729CSR920SW
V732CSR920SW
V733ASR920SW
V733CSR920SW
V735ASR920SW
V735CSR920SW
V736ASR920SW
V736CSR920SW
V739CSR920SW
V742ASR920SW
V742CSR920SW
V743ASR920SW
V743CSR920SW
V744CSR920SW
V782ASR621SW
V782CSR621SW
V782DSR621SW
V783ASR621SW
V783CSR621SW
V783DSR621SW
V785ASR621SW
V785CSR621SW
V789ASR621SW
V789CSR621SW
V789DSR621SW
V800SR616SW
V801SR616SW
V802SR621SW
V803SR621SW
V803SR621SW
V805SR616SW
V806SR621SW
V810SR527SW
V811SR527SW
V821ASR626SW
V821CSR626SW
V824SR626SW
V827SR626SW
V828SR626SW
V829SR626SW
V891SR621SW
V892SR621SW
V892SR621SW
V893SR621SW
V894SR621SW
V896SR621SW
V899SR621SW
VC00SR521SW
VC01SR521SW
VC11SR521SW
VD53SR920SW
VD78SR626SW
VJ21SR621SW
VJ22SR621SW
VJ32SR621SW
VJ33SR621SW
VK67SR936SW
VK73SR936SW
VX32ESR920SW
VX39SR916SW
VX3FSR916SW
VX3KESR920SW
VX42ESR920SW
VX43ESR920SW
VX50ESR616SW
VX51ESR621SW
VX82SR621SW
VX89SR621SW
W027CR2016
W028CR2016
W029CR2016
W040CR2016
W041CR2025
W050CR2016
W060SR44W
W061CR2025
W062CR2025
W071CR2025
W072CR2025
W073CR2025
W074CR2032
W076CR2032
W100CR2025
W110CR2025
W111CR2025
W120CR2025
W130CR2025
W136CR2025
W140CR2016
W150CR2025
W151CR2025
W160CR2025
W170CR1620
W173CR1620
W190CR1620
W200SR726SW
W201SR726SW
W204SR621SW
W205CR1220
W206CR1220
W207SR726W
W209SR626SW
W210SR621SW
W240CR1620
W304CR2016
W306CR2016
W307CR2016
W308CR2016
W309CR2016
W322CR2032
W325CR2016
W329CR2016
W339ACR2025
W339BCR2025
W348CR2025
W349CR2025
W357CR2025
W358CR2025
W359CR2025
W360Solar
W361Solar
W362Solar
W363Solar
W370Solar
W371Solar
W401CR1220
W410SR721W
W440CR2025
W441CR2025
W442CR2025
W510CR1620
W511CR1620
W512CR1620
W520CR2025
W521CR2025
W522CR2025
W524CR2025
W525CR2025
W540SR1120SW
W543SR1120SW
W551CR2025
W552CR2025
W553CR2025
W561CR2016
W562CR2016
W570CR2012
W571CR2012
W580CR1216
W590CR2016
W591CR2016
W598SR920W
W600SR927W
W605CR1620
W610SR41W
W620CR2025
W621CR2025
W626CR2025
W650CR2025
W670CR2025
W671CR2025
W680CR2025
W700CR2025
W701CR2025
W710CR1616
W720CR2012
W730CR2025
W750CR2025
W751CR2025
W753CR2025
W754CR2025
W760CR2025
W770CR2016
W771CR2016
W772CR2032
W780CR2025
W800CR2025
W801CR2025
W802CR2025
W803CR2025
W804CR2025
W810CR2025
W820CR2025
W850CR2025
W851CR2025
W852CR2025
W853CR2025
W854CR2025
W855CR2025
W921SR44W
W943SR44W
Y100SR920SW
Y101SR920SW
Y102SR920SW
Y106SR927SW
Y107SR927SW
Y108SR927SW
Y109SR920SW
Y112SR1120SW
Y113SR1120SW
Y121ASR626SW
Y121GSR626SW
Y130SR726SW
Y131SR726SW
Y136SR726SW
Y136GSR626SW
Y142SR927SW
Y143SR927SW
Y145SR927SW
Y147SR927SW
Y148SR927SW
Y150SR416SW
Y151SR421SW
Y182ASR927W
Y182BSR927W
Y187SR927SW
Y189SR927SW
Y301SR716SW
Y302SR716SW
Y430SR41W
Y432SR621SW
Y433SR41SW
Y434SR621SW
Y440SR1120SW
Y446SR41W
Y448SR1130W
Y450SR1120SW
Y456SR41W
Y468SR726SW
Y469SR726SW
Y476SR41W
Y478SR927W
Y480SR621SW
Y481SR621SW
Y482SR621SW
Y483SR621SW
Y486SR41W
Y490SR726SW
Y491SR726SW
Y499SR726SW
Y504SR43SW
Y510SR43SW
Y512SR43SW
Y513SR43SW
Y514SR43SW
Y520SR516SW
Y541SR726SW
Y551SR927SW
Y552SR927SW
Y553SR927SW
Y557SR927SW
Y558SR927SW
Y559SR927SW
Y561SR936SW
Y562SR936SW
Y563SR936SW
Y572SR936SW
Y573SR936SW
Y580SR616SW
Y588SR616SW
Y590SR621SW
Y591SR527SW
Y642SR726SW
Y643SR726SW
Y651SR41W
Y652SR41W
Y661SR721W
Y662SR721W
Y665CR2016
Y666CR2016
Y670SR726W
Y702SR1130W
Y703SR1130W
Y709SR1120W
Y710CR2016
Y715CR2016
Y716CR2016
Y717CR2025
Y718CR2025
Y723SR41W
Y726SR41W
Y728SR41W
Y729SR41W
Y731CR1220
Y732CR2016
Y735CR2016
Y737CR2025
Y739SR1130W x 2
Y740CR2016
Y744CR2016
Y746CR2016
Y749CR2016
Y750CR2016
Y753CR2016
Y754CR2016
Y755CR2016
Y756CR2016
Y757CR2016
Y758CR2016
Y759CR2016
Y760CR2016
Y761CR2016
Y765CR2016
Y770CR2016
Y771CR2016
Y772CR2016
Y778CR2016
Y780CR2016
Y785CR2016
Y786CR2016
Y789CR2016
Y792SR626SW
Y798SR626W
Y799SR626W
Y800SR726SW
Y816SR1120SW
Y818SR1120SW
Y819SR1120W
Y822SR1130W x 2
Y823SR1130W x 2
Y824SR1130W x 2
Y825SR1130W x 2
Y829SR1130W x 2
Y911SR927W
Y950SR927W
Y951SR927W
Y960SR920W
Y961SR927W
Y974SR626W
Y975SR626W
Y977SR626W
Y978SR626W
YM56SR927W
YM62SR927W
YS30SR527SW
YS31SR527SW
YT57BMT920
YT58MT920
Seiko Battery by Model Number Search

1. Open the Back of a Seiko Watch

First, we will need to remove the back of your Seiko. Most Seiko watches generally have a back case with multiple indentations. You’ll want to use an adjustable watch case opener to safely open your watch. 

Adjust the size of the watch opener to fit around the back shell of the watch. Line up the nobs with the indentations of the case, and twist the cover off.

If your watch only has one small indentation on the back case, it’s likely a hinge case. You’ll need to use a common cover remover, insert the edge into the slot, and lift the case up.

2. Find the Battery Size of a Seiko Watch

Now you’ll be able to view the inner components of the watch. With a magnifying glass, confirm what type of battery powers your Seiko. Seiko battery replacement sizes can be searched in the table above. We recommend using a quality brand such as Duracell or Renata for replacement batteries for Seiko watches. At our repair center, we stock all Seiko battery sizes – as well as dozens of other sizes.

3. How to Replace the Watch Battery in a Seiko

Inside certain Seiko watch models, there is a clip over the battery that holds the cell in place. The clip may be screwed or pinned over the top. If there is a clip, carefully remove or loosen it. 

Once the battery is accessible, insert your tool of choice into the opening. Slowly ease the old battery from the casing. Unpackage your new battery and replace.

Gently press the new battery into position, and reclip if necessary. Make sure not to nick any other mechanisms inside the watch, as this can cause more serious, auxiliary damage. 

Before closing the back cover, make sure the watch is functional. If it is not, you may have installed the battery incorrectly, or there may be additional damage to the watch. If you cannot get the watch working properly, you can mail it to our service center for a complete inspection.

4. Secure the Cover Back on the Seiko Watch

Now that your watch is functioning properly, you can close the case with the same adjustable tool. Make sure to tighten it securely, especially if your watch is water resistant.

If your watch has a hinge case, you can press the case back on with your thumbs. It will need considerable pressure, and you will feel a click when it is secure. If you’re unable to, we recommend a watch press set to ease the process.

We hope this guide has helped you learn how to change a battery in a Seiko watch. If you are having issues, please feel free to request a shipping label. We provide a variety of Seiko watch repair services, including battery replacements, watch movement services, rubber gasket replacements, watch face crystal replacements, band repairs, and more. Contact an authorized Seiko repair specialist with RepairTJC.com.