2 X Pkcell 1.5v Zinc Carbon R14, Um2, Mn1400 For Toys, Games, Radio R14p Um2 Batteria C Batteries - Primary & Dry Batteries - AliExpress
Overview of Batteries in Series or Parallel - Battery Products - Electronic Component and Engineering Solution Forum - TechForum │ Digi-Key
Bevigor Lithium Batteries AA, 96 Pack 1.5V 3000mAh Lithium Double A Ba – BEVIGOR
2 x Duracell Alkaline N LR1 1.5V batteries MN9100 E90 AM5 2 in Pack 5000394203983 | eBay
2*AAA SMT Battery Holder With Pins AAA Battery Case 2 x 1.5V Battery Compartment Single 2AAA Battery Box 3V|Replacement Parts & Accessories| - AliExpress