| Description | Date | Identifier | |
| Graph showing the results of an electrical battery discharge test. | 1st Apr 1926 | Box 54 \ 1 Scan199 | |
| Re-test report on a Sandwich SX battery from chassis 98NK, detailing its performance under low and high rate discharge tests. | 7th Apr 1926 | Box 54 \ 1 Scan200 | |
| Instructions and results from a test on battery cell discharge and capacity. | 8th Apr 1926 | Box 54 \ 1 Scan201 | |
| Graph plotting performance data with calculations after the subject stood for 14 days. | 8th Apr 1926 | Box 54 \ 1 Scan202 | |
| Graph chart detailing the results of what appears to be a battery discharge test. | 12th Apr 1926 | Box 54 \ 1 Scan203 | |
| Table detailing the configuration of experimental 40/50 sandwich batteries. | 12th Apr 1926 | Box 54 \ 1 Scan204 | |
| Leakage test results for an SU Battery. | 14th Apr 1926 | Box 54 \ 1 Scan205 | |
| Extract from a letter concerning the premature failure of battery cells after 16,000 miles in an experimental car. | 15th Apr 1926 | Box 54 \ 1 Scan206 | |
| Requesting the return of an experimental sandwich battery from chassis 11-EX for analysis. | 24th Apr 1926 | Box 54 \ 1 Scan207 | |
| The condition of a battery from Experimental Chassis No. 11-EX. | 28th Apr 1926 | Box 54 \ 1 Scan208 | |
| Examination report on the condition of battery number 170 after removal from chassis 11EX. | 11th May 1926 | Box 54 \ 1 Scan209 | |
| Instruction sheet detailing the inspection and reconditioning of various battery cells. | 29th Aug 1920 | Box 54 \ 1 Scan210 | |
| Re-testing an SY Battery after it had completed 9012 miles. | 7th Jun 1926 | Box 54 \ 1 Scan211 | |
| High-rate discharge battery test comparing different cell types. | 8th Dec 1924 | Box 54 \ 1 Scan212 | |
| Graph chart recording from a Megger electrical test showing amperes over time. | 19th Jul 1926 | Box 54 \ 1 Scan213 | |
| Chassis 12-EX after 6000 miles, detailing battery and ammeter performance. | 19th Aug 1926 | Box 54 \ 1 Scan214 | |
| The electrical fittings, battery, and ammeter of chassis 12-EX. EAC.8 after a 9000-mile test. | 23th Aug 1926 | Box 54 \ 1 Scan215 | |
| Chart recording from an electrical test, showing a plotted graph and handwritten calculations. | 17th Sep 1926 | Box 54 \ 1 Scan216 | |
| Instructions and results for a re-test on an S2 battery taken from chassis 9PH. | 22th Jul 1926 | Box 54 \ 1 Scan217 | |
| The bench test results of a high-rate discharge test on an S1 battery. | 15th Oct 1926 | Box 54 \ 1 Scan218 | |
| Bench test results for an SJ Battery (172) removed from vehicle 9EX. | 10th Nov 1926 | Box 54 \ 1 Scan219 | |
| Instruction sheet with a handwritten report on a battery performance test. | 1st Dec 1924 | Box 54 \ 1 Scan220 | |
| The re-testing of an S4 battery after completing significant mileage. | 22th Nov 1926 | Box 54 \ 1 Scan221 | |
| High-rate discharge test of a battery, noting cadmium weakness. | 8th Dec 1924 | Box 54 \ 1 Scan222 | |
| Instruction sheet detailing an experiment on battery charging characteristics. | 3rd Jan 1927 | Box 54 \ 1 Scan223 | |
| Instruction sheet detailing battery charge and discharge test results, noting capacity in ampere-hours. | 8th Dec 1924 | Box 54 \ 1 Scan224 | |
| Instructions regarding a faulty SV battery with a shorted and leaking Oldham cell that needs removal for investigation. | 31th Dec 1926 | Box 54 \ 1 Scan225 | |
| Battery test detailing corrosion, a broken vent, and low capacity after road use. | 11th Jan 1927 | Box 54 \ 1 Scan226 | |
| High-rate discharge battery test, noting the poor performance of Oldham & Fuller cells. | 20th Jan 1927 | Box 54 \ 1 Scan227 | |
| Instruction sheet detailing re-tests on a 5V battery following a cell failure. | 20th Jan 1927 | Box 54 \ 1 Scan228 | |
| Instruction sheet noting poor results from two Oldham cells due to poor capacity during a cadmium test. | 8th Dec 1924 | Box 54 \ 1 Scan229 | |
| Instructions and results from tests performed on an SU Battery (176). | 7th Feb 1927 | Box 54 \ 1 Scan230 | |
| The bench testing of an S2 battery (155) removed from chassis 8EX. | 16th Feb 1927 | Box 54 \ 1 Scan231 | |
| Instruction sheet detailing the results of re-tests on an SX battery after road and bench trials. | 24th Feb 1927 | Box 54 \ 1 Scan232 | |
| Graph record of a battery being charged at a continuous current. | 5th Jan 1927 | Box 54 \ 1 Scan233 | |
| Chart detailing the characteristic curve of an S1 battery during charging. | 1st Jan 1927 | Box 54 \ 1 Scan234 | |
| Performance graph chart from an S1 battery test. | 5th Jan 1927 | Box 54 \ 1 Scan235 | |
| Test log on graph paper recording amperage, hours, and weight. | 17th Jan 1927 | Box 54 \ 1 Scan236 | |
| Battery discharge test result chart showing performance over time. | 2nd Feb 1927 | Box 54 \ 1 Scan237 | |
| Graph chart recording amperage over time with handwritten calculations and notes. | 15th Feb 1927 | Box 54 \ 1 Scan238 | |
| The performance and discharge curves of Exide & P & R batteries for the 40/50 HP chassis after extensive road and bench testing. | 26th Feb 1927 | Box 54 \ 1 Scan239 | |
| Report comparing the performance of a standard 12-volt battery against various alternatives and noting a future report on 20 HP batteries. | 16th Feb 1927 | Box 54 \ 1 Scan240 | |
| The bench tests of an S2 battery after removal from chassis 8-EX. | 16th Feb 1927 | Box 54 \ 1 Scan241 | |
| Test report on an SX Battery (159) detailing road mileage and bench test discharge results. | 24th Feb 1927 | Box 54 \ 1 Scan242 | |
| Performance graph detailing average amperes, hours, and ampere-hours after a mileage test. | 15th Feb 1927 | Box 54 \ 1 Scan243 | |
| Blueprint graph showing electrical performance test data including amperage, hours, weight, and mileage. | 21th Feb 1927 | Box 54 \ 1 Scan244 | |
| Graph showing continuous high rate discharge curves for 40-50 HP chassis batteries. | 21th Mar 1925 | Box 54 \ 1 Scan245 | |
| Bench tests performed on an SY Battery, detailing low and high rate discharge results. | 21th Mar 1925 | Box 54 \ 1 Scan246 | |
| Requesting the temporary removal of the Sandwich Battery S3 from chassis 10-EX for laboratory tests. | 30th Apr 1927 | Box 54 \ 1 Scan247 | |
| Chart recording of a battery discharge test showing a steady current over time. | 9th Nov 1926 | Box 54 \ 1 Scan248 | |
| Experimental record sheet tracking the mileage and testing of an SJ.(172) battery from 1925 to 1927. | 15th Apr 1927 | Box 54 \ 1 Scan249 | |
| Electrical experimental record sheet logging a battery test with mileage. | 19th Apr 1926 | Box 54 \ 1 Scan250 | |
| Chart recording from an electrical test showing amperage over time, with calculated results. | 6th May 1927 | Box 54 \ 1 Scan251 | |
| The testing of an S.3. Battery, number 156, removed from vehicle 10EX. | 12th May 1927 | Box 54 \ 1 Scan252 | |
| Graph chart recording data from a battery discharge test. | 2nd Jun 1927 | Box 54 \ 1 Scan253 | |
| Instruction sheet detailing a bench test on a battery. | 8th Jun 1927 | Box 54 \ 1 Scan254 | |
| Instructions and results for a re-test on an S1 battery after it has run 12,956 miles. | 6th Sep 1927 | Box 54 \ 1 Scan255 | |
| Results of low and high rate discharge tests on a Sandwich S4 battery. | 3rd Oct 1927 | Box 54 \ 1 Scan256 | |
| Instruction sheet noting cadmium 'readways' (readings) on charge. | 8th Dec 1924 | Box 54 \ 1 Scan257 | |
| Letter from Peto & Radford regarding modifications to batteries and their expected lifespan. | 17th Oct 1927 | Box 54 \ 1 Scan258 | |
| Acquisition of 6-volt battery boxes to reconfigure 12-volt units for comparative cell tests on experimental cars. | 1st Mar 1928 | Box 54 \ 1 Scan259 | |
| Instruction sheet detailing the test results for a failed 5Z battery and its subsequent repair. | 3rd Mar 1928 | Box 54 \ 1 Scan260 | |
| Performance test of different types of battery cells. | 13th Jun 1928 | Box 54 \ 1 Scan261 | |
| Results of bench tests on SU & SV batteries, detailing low and high rate discharge performance. | 13th Jun 1928 | Box 54 \ 1 Scan262 | |
| Instruction sheet detailing test results for cells, recording amperage drops over time and noting the performance of Oldham cells. | 8th Dec 1924 | Box 54 \ 1 Scan263 | |
| Instruction sheet detailing the results of low and high rate discharge tests on an S2 Battery. | 28th Jun 1928 | Box 54 \ 1 Scan264 | |
| Test and usage log for an SY Battery (170), tracking its location, remarks, and mileage over several years. | 27th Jun 1928 | Box 54 \ 1 Scan265 | |
| Letter to Peto & Radford regarding faulty screw threads on vent plugs for 40/50 HP car batteries. | 5th Jul 1928 | Box 54 \ 1 Scan266 | |
| The failure of P & R cells in 40/50 type Sandwich Batteries and 20 HP batteries. | 4th Oct 1927 | Box 54 \ 1 Scan267 | |
| Page 3 of a letter discussing the condition and history of failed battery cells, including a 20 HP battery. | 7th Jun 1928 | Box 54 \ 1 Scan268 | |
| Graph showing the results of a battery discharge test. | 7th Jun 1928 | Box 54 \ 1 Scan269 | |
| The failure of P & R battery cells, detailing the cause of the shorting and suggesting a design improvement. | 27th Jun 1928 | Box 54 \ 1 Scan270 | |
| The failure of cell No. 6 in a P & R TBD7-10 Battery (158) due to shorting. | 4th Jul 1928 | Box 54 \ 1 Scan271 | |
| Letter from Peto & Radford concerning test batteries, plate clearance, and vent plugs. | 7th Jul 1928 | Box 54 \ 1 Scan272 | |
| Letter from accumulator manufacturers Peto & Radford arranging a visit to discuss cells. | 12th Jul 1928 | Box 54 \ 1 Scan273 | |
| Letter to Messrs. Peto & Radford arranging a visit for Mr. Preston to inspect opened cells. | 14th Jul 1928 | Box 54 \ 1 Scan274 | |
| Letter from Peto & Radford confirming a visit from Mr. Preston the following day. | 16th Jul 1928 | Box 54 \ 1 Scan275 | |
| Telegram confirmation arranging for Mr. Preston to visit the Experimental Department. | 18th Jul 1928 | Box 54 \ 1 Scan276 | |
| Returning failed battery plates and surplus material to the supplier, Peto & Radford. | 19th Jul 1928 | Box 54 \ 1 Scan277 | |
| Letter to Messrs. Peto & Radford regarding faulty cells and the return of materials for credit. | 19th Jul 1928 | Box 54 \ 1 Scan278 | |
| Page 2 of a letter regarding an enquiry for undelivered wooden plate type separators. | 19th Jul 1928 | Box 54 \ 1 Scan279 | |
| Investigation into the failure of a P & R cell in an SS battery after two years of service. | 19th Jul 1928 | Box 54 \ 1 Scan280 | |
| The failure of a P & R cell in an S4 battery after extended service and testing. | 19th Jul 1928 | Box 54 \ 1 Scan281 | |
| Letter from Peto & Radford concerning issues and the supply of accumulator cells. | 26th Jul 1928 | Box 54 \ 1 Scan282 | |
| Letter from Peto & Radford detailing modifications to battery separators and bus bars. | 26th Jul 1928 | Box 54 \ 1 Scan283 | |
| Battery discharge performance test chart showing a voltage curve over time. | 8th Jun 1928 | Box 54 \ 1 Scan284 | |
| Graphical chart recording the results of a battery discharge test. | 25th Jun 1928 | Box 54 \ 1 Scan285 | |
| Chart recording of an electrical test, possibly a battery discharge, with handwritten calculations. | 16th Aug 1928 | Box 54 \ 1 Scan286 | |
| Battery failure on the 10-EX Blue Sports Car and a request for a test battery to be returned. | 13th Aug 1928 | Box 54 \ 1 Scan287 | |
| The failure of a P & R cell in an SS battery. | 17th Aug 1928 | Box 54 \ 1 Scan288 | |
| Analysis of a Fuller cell battery failure after 10,000 miles and 2 years of testing. | 17th Aug 1928 | Box 54 \ 1 Scan289 | |
| Electrical experimental record sheet for a SZ (171) battery test. | 23th Nov 1925 | Box 54 \ 1 Scan290 | |
| Electrical experimental record sheet for battery SZ(171), page 2. | 19th Apr 1926 | Box 54 \ 1 Scan291 | |
| Instructions regarding the failure of a P&R cell in an S3 battery after nearly 15,000 miles. | 17th Aug 1928 | Box 54 \ 1 Scan292 | |
| Replacing an experimental battery on the 10-EX car. | 18th Aug 1928 | Box 54 \ 1 Scan293 | |
| Letter to The Chloride Elec. Storage Co. Ltd. regarding premature rotting of Exide battery cases and placing an order for replacements. | 18th Aug 1928 | Box 54 \ 1 Scan294 | |
| Letter to Messrs. Peto & Radford concerning P & R cell failures and enclosing a report on the matter. | 18th Aug 1928 | Box 54 \ 1 Scan295 | |
| Letter from The Chloride Electrical Storage Company Ltd. arranging an inspection of material. | 20th Aug 1928 | Box 54 \ 1 Scan296 | |
| Test results for a battery after 30,000 miles, detailing low and high rate discharge performance. | 20th Aug 1928 | Box 54 \ 1 Scan297 | |
| Instruction sheet detailing low and high rate discharge tests on an SX battery that has run 13,787 miles. | 20th Aug 1928 | Box 54 \ 1 Scan298 | |
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