SLI vs AGM vs EFB vs Heavy Duty — Complete Technology Comparison

Quick Decision Matrix

Your Requirement	Best Technology	Why
Lowest cost, conventional vehicle	SLI	$ lowest, proven, 3-5 year life
Start-stop vehicle (entry level)	EFB	2x SLI life, moderate cost
Start-stop vehicle (full/aggressive)	AGM	3-4x SLI life, fastest recharge
Premium/luxury vehicle	AGM	High electrical load handling
Truck, bus, construction equipment	Heavy Duty	Vibration-proof, deep cycle tolerant
Cold climate (-30degC or below)	AGM or Heavy Duty	Best cold CCA performance
Hot climate (40degC+)	AGM	Better heat tolerance than flooded
Deep cycle (accessories, camping)	AGM	Tolerates 50-80% discharge
UPS/telecom/standby	VRLA	Long float life, sealed

Spec	SLI	EFB	AGM	Heavy Duty
Electrolyte	Flooded liquid	Flooded + carbon	Absorbed in glass mat	Flooded (deep sump)
Plate thickness	1.5-2.0 mm	1.8-2.3 mm	1.8-2.5 mm	2.5-4.0 mm
Grid alloy	Pb-Ca	Pb-Ca-Sn	Pb-Ca-Sn	Pb-Sb or Pb-Ca
Separator	PE envelope	PE + glass backing	Compressed glass mat	PE + glass mat
Sealed	No	No	Yes (VRLA)	No
CCA (typ. range)	300-900 A	500-800 A	500-1,000 A	800-1,200 A
Cycle life (50% DoD)	200-500	300-600	400-800	300-500
Charge acceptance	Baseline (1x)	1.5-2x	2-3x	Baseline
Self-discharge/month	3-5%	3-4%	1-3%	4-6%
Cost (relative to SLI)	1x	1.3x	1.5-2x	2-3x
Weight (typical 65Ah)	14-18 kg	15-19 kg	17-22 kg	N/A (120+ Ah)
Recyclability	>98%	>98%	>98%	>98%

Technology	Chengguang Produces	Daily Output	IATF 16949
SLI	:material-check: Yes — 12 models	25,000+	:material-check:
EFB	:material-check: Available on request	Contact	:material-check:
AGM	:material-check: Available on request	Contact	:material-check:
Heavy Duty	:material-check: Yes — 2 models	1,300-2,000	:material-check:
VRLA	:material-check: Industrial applications	Contact	:material-check: