What kind of certificate or declaration is needed for rechargeable battery? GOST R, CU TR, national TR or Telecom / FAC declaration? What certification mark is applicable — PCT, or EAC, or national TR? The exact answer is not so easy as it seems because it depends on chemical type and battery scope of application. The table below would help you to classify them accordingly with the following CU and national regulations. Follow the link to know some additional information about battery FAC certification.

batteries
1 Primary
alkaline
battery
2 Li-Ion
rechargeable
battery
3 Portable
battery
charger
4 Rechargeable
battery
for telecom
power supply
5 Automotive
rechargeable
battery
# Battery RU
decl
CU
decl
CU TR
decl
FAC
decl
Mark Comments
1 Primary alkaline battery +       PCT Valid on Russian territory only. Not used for all other CU countries 
2 Li-Ion rechargeable battery + +1)     PCT Valid on Russian territory only. Not used for all other CU countries
3 Portable battery charger     +   EAC For all CU / EAEU countries.
EAC mark enforced Feb 15, 2012
4 Rechargeable battery for telecom service provider + +1)   + PCT2) Valid on Russian territory only. Not used for all other CU countries
5 Rechargeable battery for motor car     +   EAC For all CU / EAEU countries.
EAC mark enforced Jan 01, 2015

Notice
1) If RU and CU declaration applicable both in this case it's enough to get one of them to import, clear customs and sale the battery on Russian territory, read more...

2) No FAC / Telecom mark at all