| Year | 1919 |
| Date | 04-Sep |
| Volume | 41 |
| Issue | 958 |
| Page | 220 |
| Category | Electrical |
| Part | |
| Title | A "High-Tension" Battery |
| Author | A.V.Ballhatchet |
| Notes | five cells in teak rack, view of the series-parallel switch, section of celluloid support, elevation & plan of rack for battery of five cells, mould & type of plates used for cells, switch connections for series or parallel |