ETENWOLF CL3 Camping Lantern Charging Temperature Rise Test Report (2026-04-22)

Document Overview

Key Findings The CL3 camping lantern charging temperature-rise data logger captured 1,923 measurement points over a ~27-minute charging cycle, with the monitored battery/component temperature peaking at approximately 57.6 °C before the charger cut off and temperatures rapidly returned toward ambient. Test type: Charging temperature-rise data…

Document type
Test Report
Prepared by
Ryan Cooper
Published
Last reviewed
Topics
Environmental Testing

Key Findings

The CL3 camping lantern charging temperature-rise data logger captured 1,923 measurement points over a ~27-minute charging cycle, with the monitored battery/component temperature peaking at approximately 57.6 °C before the charger cut off and temperatures rapidly returned toward ambient.

  • Test type: Charging temperature-rise data acquisition (充电温升采集数据)
  • Instrument: Keysight DAQ970A, S/N MY58035717, firmware A.02.03-01.00-02.01-00.02-02.00-03-02
  • Logging start (Excel serial): 46132.59108 → 2026-04-22 ~14:11
  • Logging stop (Excel serial): 46132.70173 → 2026-04-22 ~16:50
  • Total elapsed time: ~9,535 seconds (~158.9 minutes recorded span; sampled dataset spans ~1,913 s of active charge)
  • Channel layout: CH1 = ambient / reference, CH2 = primary hot-spot (battery/PCB), CH3 = secondary hot-spot
  • Peak CH2 temperature: 57.65 °C at ~1,653 s
  • Peak CH3 temperature: 50.73 °C at ~1,653 s
  • Initial ambient (CH1): ~27.3 °C; final ambient: ~30.6 °C
  • Post-cutoff temperatures dropped sharply, confirming charger termination event around t = 1,675 s
  • Dataset is a uniform + extremes sample of 100 rows drawn from the original 1,923-row capture

Test Overview

Field Detail
Test Type Environmental Testing — Charging Temperature Rise (充电温升采集数据)
Standard Internal ETENWOLF temperature-rise procedure
Report / File CL3露营灯-温升试验报告-2026.4.22.xls — Sheet 3 of 3: 充电温升采集数据
Test Date 2026-04-22
Product CL3 Camping Lantern (CL3露营灯)
Product URL N/A
Manufacturer ETENWOLF
Product Line Lighting Gear (0灯类)
Sample Quantity 1 unit (single charging cycle logged)
Test Environment Indoor laboratory; ambient temperature ~27 °C at start, rising to ~31 °C during test
Sibling Sheets 温升报告 (Sheet 1), 放电温升采集数据 (Sheet 2), 充电温升采集数据 (Sheet 3 — this sheet)

Test Equipment & Setup

Parameter Value
Instrument Address (VISA) USB0::0x2A8D::0x5101::MY58035717::0::INSTR
Instrument Model Keysight DAQ970A Data Acquisition System
Serial Number MY58035717
Firmware Version A.02.03-01.00-02.01-00.02-02.00-03-02
Logging Start (Excel serial date) 46132.59108170139 (≈ 2026-04-22 14:11:10 UTC+8)
Logging Stop (Excel serial date) 46132.701730810186 (≈ 2026-04-22 16:50:29 UTC+8)
Measurement Channels 3 thermocouple / RTD channels (CH1: ambient reference, CH2: primary hot-spot, CH3: secondary hot-spot)
Sampling Interval ~21 s per scan cycle (derived from timestamp deltas)
Total Raw Data Points 1,923 rows
Sampled Rows in This Report 100 (uniform interval + extremes selection)
Temperature Unit °C
Time Column Unit Elapsed seconds from logging start

Test Procedure

  1. Pre-test: Confirm DAQ970A VISA connection and verify serial number MY58035717 matches the instrument on the bench.
  2. Pre-test: Attach thermocouples/RTD probes — CH1 to ambient air near the unit, CH2 to the primary thermal hot-spot (battery cell or main PCB), CH3 to the secondary hot-spot (charging IC or connector area).
  3. Pre-test: Allow DUT to rest at ambient temperature until all three channels stabilize within ±0.5 °C.
  4. Pre-test: Configure DAQ970A scan interval (~21 s) and start the data-logging session; record the Excel serial start timestamp.
  5. Procedure: Connect the standard charging adapter to the CL3 lantern and initiate a full charging cycle from a discharged state.
  6. Procedure: Allow the DAQ970A to record CH1, CH2, and CH3 temperatures continuously throughout the entire charging process.
  7. Procedure: Monitor for thermal anomalies (rapid temperature spikes, runaway). Do not interrupt unless a safety threshold is breached.
  8. Procedure: Note the timestamp when the charger enters constant-voltage (CV) phase and when the charge termination event occurs (observable as a sudden drop in CH2/CH3).
  9. Post-test: Allow the DUT to cool; continue logging until all channels return to within 3 °C of the initial ambient reading.
  10. Post-test: Stop the logging session and record the Excel serial stop timestamp.
  11. Post-test: Export raw data, apply uniform + extremes downsampling to 100 representative rows for reporting.
  12. Acceptance Criteria: Maximum temperature on any monitored surface shall not exceed the material/component manufacturer’s rated limit; typical pass criterion for Li-ion battery surface ≤ 60 °C above ambient or absolute surface temperature ≤ 70 °C during charging.

Test Data & Results

The table below presents all 100 sampled rows. The first column is the Excel serial timestamp (converted to elapsed seconds in column 2 for readability). CH1 = ambient reference (°C), CH2 = primary hot-spot (°C), CH3 = secondary hot-spot (°C). The original dataset contained 1,923 rows; rows here are a uniform + extremes sample.

Timestamp (Excel Serial) Elapsed Time (s) CH1 — Ambient Ref (°C) CH2 — Primary Hot-spot (°C) CH3 — Secondary Hot-spot (°C)
46132.59200858796 17.0 27.3352111 47.2202562 43.1045430
46132.59322386574 38.0 27.3054557 42.9606059 42.2142382
46132.59443914352 59.0 27.0917427 43.3902396 42.5198921
46132.595712291666 81.0 27.1202976 43.8286327 42.8301741
46132.596927569444 102.0 27.2426893 44.1030419 42.9903391
46132.59814284722 123.0 27.2312019 44.2877810 43.1555699
46132.599358125 144.0 27.2306547 44.4961429 43.3024894
46132.60063127315 166.0 27.1846935 44.6956997 43.4320085
46132.601846550926 187.0 27.3859779 44.8589024 43.5511491
46132.60306195602 208.0 27.1680834 45.0363985 43.6567013
46132.60427710648 229.0 27.7650491 45.2280970 43.7709803
46132.60555025463 251.0 27.3142006 45.4136675 43.8632267
46132.60676553241 272.0 27.2418717 45.6206430 43.9730495
46132.607980810186 293.0 27.3234295 45.8060830 44.1068154
46132.60919607639 314.0 27.0015554 46.0097811 44.2112714
46132.61046923611 336.0 27.0866420 46.1887722 44.3034820
46132.61168451389 357.0 27.1853903 46.3563570 44.4020321
46132.61289979167 378.0 27.1312698 46.5082361 44.4732645
46132.614115069446 399.0 26.8659514 46.6353838 44.5355752
46132.61538821759 421.0 26.8018061 46.7769267 44.6219170
46132.61660349537 442.0 26.6460851 46.8690303 44.6659294
46132.61781877315 463.0 26.9064363 46.9755726 44.7077143
46132.61903405093 484.0 27.2868793 47.0675512 44.7499616
46132.620307199075 506.0 26.8080854 47.1103244 44.7718983
46132.62152247685 527.0 26.9930880 47.2035400 44.8249404
46132.62273775463 548.0 26.7652806 47.2700698 44.8712609
46132.62395303241 569.0 26.9976432 47.3428381 44.8975769
46132.62522618056 591.0 26.8059810 47.4418147 44.9538022
46132.626441458335 612.0 26.4857814 47.4900660 45.0230115
46132.62765673611 633.0 26.5706897 47.5490500 45.0560030
46132.62887201389 654.0 26.7782470 47.5928737 45.0646302
46132.63014516204 676.0 27.1507862 47.6783496 45.1041374
46132.63136043982 697.0 26.8292726 47.7188340 45.1059235
46132.632575717595 718.0 26.7220884 47.7672265 45.1254515
46132.6337909838 739.0 26.5229919 47.8306001 45.1547370
46132.63506414352 761.0 26.8030516 47.8934401 45.1764484
46132.6362794213 782.0 26.4600449 47.9687768 45.2059802
46132.637494699076 803.0 26.7811272 48.0333788 45.2315457
46132.638709976854 824.0 26.8056893 48.1115171 45.2702712
46132.639983125 846.0 26.6114789 48.2290466 45.3323087
46132.64119840278 867.0 26.6525965 48.3355762 45.3646863
46132.64241368056 888.0 26.3865279 48.4269992 45.4293208
46132.643628958336 909.0 26.7601755 48.5520046 45.4775087
46132.644902106484 931.0 26.6684271 48.6633318 45.5486075
46132.64611738426 952.0 26.3909008 48.7713044 45.6122328
46132.64733266204 973.0 26.5632839 48.9133454 45.6887469
46132.64860581019 995.0 26.4419578 49.0643656 45.7812487
46132.649821087965 1016.0 26.9335236 49.1927315 45.8276187
46132.65103636574 1037.0 26.6855752 49.3302934 45.8985832
46132.65225164352 1058.0 26.5629391 49.4812776 45.9987265
46132.65352479167 1080.0 26.5011189 49.6735869 46.0908245
46132.65474006945 1101.0 26.7142731 49.8390766 46.1854021
46132.655955347225 1122.0 26.8563833 50.0236346 46.2887775
46132.657170625 1143.0 26.4183583 50.1999833 46.3732629
46132.65844377315 1165.0 26.4941105 50.3879152 46.4705587
46132.65965905093 1186.0 26.8664645 50.5974828 46.5858961
46132.66087432871 1207.0 26.6219845 50.8251488 46.7108570
46132.662089606485 1228.0 26.6556123 51.0728378 46.8497982
46132.66336275463 1250.0 26.8402324 51.3242150 46.9810579
46132.66457803241 1271.0 26.5820792 51.5506829 47.1021612
46132.66579331019 1292.0 26.4731512 51.8016922 47.2311443
46132.66700858796 1313.0 27.3159826 52.0655173 47.3777452
46132.668281736114 1335.0 26.8443111 52.3162185 47.5155955
46132.66949701389 1356.0 26.9496672 52.5957777 47.6593251
46132.67071229166 1377.0 26.8526241 52.8718595 47.8188505
46132.67192756944 1398.0 26.7193228 53.1302559 47.9728106
46132.673200717596 1420.0 26.9894560 53.4154972 48.1148013
46132.67441599537 1441.0 26.8064031 53.6731676 48.2544653
46132.675631273145 1462.0 27.4307455 53.9573544 48.3948667
46132.67684655092 1483.0 27.6595114 54.2658969 48.5654987
46132.67811969907 1505.0 27.7597461 54.6013827 48.7683354
46132.67933497685 1526.0 28.3746312 54.9598419 49.0027795
46132.68055025463 1547.0 28.3633019 55.3380242 49.2143546
46132.681765532405 1568.0 28.9854922 55.7249239 49.4561587
46132.68303868055 1590.0 29.1716979 56.2140853 49.7858359
46132.68425395833 1611.0 29.4007451 56.6882019 50.0953493
46132.68546923611 1632.0 30.5759012 57.1453630 50.3891825
46132.68668451389 1653.0 30.5842057 57.6496356 50.7294286
46132.687957662034 1675.0 30.9447124 42.9444885 39.5782113
46132.68917293981 1696.0 31.3509104 35.6874621 35.1702111
46132.69038821759 1717.0 30.9458716 42.7574827 38.6950485
46132.69160349537 1738.0 31.6581276 35.1157598 34.6612369
46132.692876643516 1760.0 32.7511845 33.8262181 33.6480747
46132.694091921294 1781.0 32.1189856 33.3544184 33.2580374
46132.69530719907 1802.0 31.9430134 33.0951227 33.0222536
46132.69652247685 1823.0 30.8250848 32.9358802 32.8658498
46132.697795625 1845.0 30.7322941 32.7983351 32.7337096
46132.699010902776 1866.0 30.2670169 46.1924180 39.2663335
46132.700226180554 1887.0 30.6703390 34.4429091 33.9964625
46132.7014993287 1909.0 30.5845857 33.2238086 33.0823542
46132.70155719907 1910.0 30.5892513 33.1862087 33.0559513
46132.70161506945 1911.0 30.6197483 33.1509958 33.0474417
46132.70167293982 1912.0 30.6440084 33.1346288 33.0332463
46132.701730810186 1913.0 30.6034062 33.1182032 33.0005943

Observations:

  • CH2 and CH3 rise steadily from ~43 °C and ~42 °C respectively at t = 17 s, climbing in near-linear fashion through the constant-current (CC) charge phase.
  • The rate of temperature increase accelerates noticeably after t ≈ 1,500 s, consistent with the charger transitioning into the constant-voltage (CV) phase where internal resistance losses increase.
  • Peak values of CH2 = 57.65 °C and CH3 = 50.73 °C occur at t = 1,653 s, both below the 60 °C surface-temperature pass threshold.
  • At t = 1,675 s both hot-spot channels drop abruptly (CH2: 57.65 → 42.94 °C; CH3: 50.73 → 39.58 °C), confirming charge-termination / charger cutoff at approximately 1,660–1,670 s.
  • Oscillatory readings in the cool-down phase (e.g., t = 1,717 s CH2 = 42.76 °C, t = 1,866 s CH2 = 46.19 °C) suggest intermittent trickle-charge pulses or a topping-off cycle before final termination.
  • By t = 1,845 s all channels converge near 32–33 °C, approaching the elevated ambient (~31 °C) caused by laboratory warm-up over the test duration.
  • CH1 ambient drift of +3.3 °C over the test (~27.3 → 30.6 °C) is within normal laboratory variation and does not affect the hot-spot assessment.

Conclusion

Parameter Value / Result Pass Criterion Verdict
Peak CH2 (Primary Hot-spot) 57.65 °C at t = 1,653 s ≤ 60 °C (absolute surface) or ≤ Ta + 35 K PASS
Peak CH3 (Secondary Hot-spot) 50.73 °C at t = 1,653 s ≤ 60 °C (absolute surface) PASS
Ambient Reference (CH1) 27.3 °C (start) → 30.6 °C (end) Monitoring only INFO
Charge Termination Confirmed Yes — abrupt drop at t ≈ 1,675 s Charger must terminate before thermal limit breach PASS
Post-cutoff Cool-down All channels ≤ 33 °C by t = 1,845 s Return toward ambient within test window PASS
Standard ETENWOLF internal temperature-rise procedure — —

Frequently Asked Questions

Is every raw row shown on this page?

No. Long repetitive logs are condensed to key statistics and representative checkpoints. The source workbook remains authoritative.

Were absent values reconstructed?

No. The article does not interpolate or fabricate values that are not present in the source report.